Silicone Sealants Manual PERFECT JOINTS
Contents
1. Apply sealant into vertical joints from top to bottom This prevents condensation water or rain water from collecting Processing temperature from 5 to 40 C Smooth the sealant Smoothing a Joint Press the sealant and smooth it so as to make good contact with the surfaces to be joined Avoid using tooling agent if possible The tooling agent must be neutral It may not stain the sealant or adjacent elements Nor may it leave behind any film so as to prevent diagonal cracks forming when the sealant expands Remove masking tape Removing Masking Tape After the preceding steps remove the masking tape Joint sealing is complete Remove any cured or uncured silicone rubber residue on the surfaces as fol lows Removing Silicone Rubber Use a spatula paper or a cloth to remove uncured silicone sealant Use a solvent such as white spirit methylethyl ketone or ethanol to wipe off the residue Follow safety instructions Clean processing equipment before the silicone rubber cures Leave the cured silicone sealant to swell in solvent then remove it mechanically 11 Processing WITH THE RIGHT TECHNIQUE YOUR JOINT SEALING WILL FIT PERFECTLY The lateral joint surfaces must satisfy structural functional and processing demands For optimum sealing use the correct technique for each type of joint Also keep to the processing guidelines for the sealant in use2. 12 Incorrect butt joint Unfavorable three side adhesion Correct butt joint Unimpeded expansion movements Butt Joints The silicone sealant must be able to move freely so as to ensure the flexibility of the joint To allow unhindered compensation of tensile and compressive movements between the joint surfaces the sealant must only be securely bonded to the lateral surfaces In the lower joint section the sealant must retain free movement To avoid unfavorable three sided adhesion insert PE backer rods or a PE release film in the event of flat joints before jointing Use the sealant to spot bond the film strips to the substrate at fairly large intervals Incorrect connection joint Correct connection joint Connection Joints Sealant sags unfavorably Backing material gives the sealant grip Connection joints are formed by tri angular chamfered edges The two surfaces to be bonded meet at an edge It is important that these surfaces do not meet deep within the joint and that the sealant cannot sag You can avoid this by inserting PE backer rods into the tip of the triangular chamfer Then you can make the joint Incorrect shear joint Correct shear joint Shear Joints Sealant adheres on 3 sides and sags Backing material for correct sealing The surfaces in shear joints move parallel to one another This may cause three sided adhesion of the sealant and cause it to sag deep into the joint To ach
3. WACKER ntroduction Applications Benefits Joint Design Work Steps Types of Joints RTV 1 Silicone Sealants Standards and Quality WACKER at a Glance WACKER Silicone Sealants General purpose and tailored solutions Broad application range Consistently high quality Easy to process Technical support Versatile Silicone Sealants There are things that make you wonder how you ever managed without them Prime examples are silicone sealants which have developed into indispens able versatile products for an extremely broad application range over some fifty years Whether on building sites in the field of sanitary applications and fittings window construction metal or plastic construction in the household or DIY sectors silicone sealants are used everywhere They seal joints reliably and ensure the weatherproof joining of structural components At the same time silicone sealants prevent construction elements locking together They con tribute to long lasting quality obtained in a particularly quick and easy manner WACKER Represents Quality Nothing is perfect That is why WACKER is constantly improving its silicone sealants Today s high tech silicone sealants have to meet the strictest specifications optimum adhesion extreme aging resistance to outside influences and long term functionality As a user you particularly benefit from the fact that WACKER RTV 1 silicone sealants are ready t
4. Match the primer sealant and con struction material to each other Always prime porous mineral materials beforehand Apply primer just to the joint surfaces but not to the material s surface this will prevent possible staining For further information please consult our EXCELLENT SILICONE SEALANTS PRIMERS product data sheet Insert backing material Inserting Backing Material Insert backing material securely and to an even depth This ensures compliance with the necessary uniformly convex joint depth see Table on page 8 This stops the sealant from adhering to the joint base or being overstretched as a result of three sided adhesion To offer suffi cient resistance during introduction and smoothing of the sealant the backing strip diameter must be about 25 wider than the joint width Closed cell smooth surface polyethylene PE backer rods have proved effective Key properties of backing material Compatibility with sealants Not water absorbent Free of substances that inhibit sealant adhesion oil bitumen tar Apply sealant from a cartridge Applying Silicone Sealant WACKER RTV 1 silicone sealants are applied manually or by machine Use a hand gun or compressed air gun for cartridges and hydraulic extruders for larger drums Important Stay within the primer s prescribed open time flash off time Introduce sealant evenly and without bubbles
5. both design features and functional elements The facade is structured by the arrangement and dimensioning of joints This gives a building its unique appearance As connection and movement joints their characteristics permit the compensation of mechanical loads and protect the building fabric from the elements 18 Quality Preserving Properties Not only masonry joints but also joints between the supporting skeleton and the masonry must comply with specific dimensions see Table on page 8 Moreover the right jointing technique employing backing material must be used Thanks to their good movement absorption and high resistance to weathering and environmental influences WACKER silicone sealants provide exactly the right properties for long lasting joints that offer consistently high functionality In this way they contribute long term to preserving the quality of the construction WACKER SILICONE SEALANTS MEET YOUR DEMANDS IDEAL PROPERTIES RTV 1 Silicone Sealants One component sealants Curing on contact with atmospheric humidity Permanently flexible silicone rubber Combination of good properties Wide product range Customized products Large range of colors Easy processing 20 Weathering and Aging Resistance Unlike other joint fillers silicone sealants have the best resistance to weathering and aging lasting for up to several decades Not even years of open air weathering will chang
6. different materials such as masonry sheet metal or copper meet WACKER has therefore developed silicone sealants exactly tailored to variable adhesion characteristics Applications include Joints between the roofing and any abutting components Joints on pipe passages The unique benefits of WACKER silicone sealants come to the fore in a wide range of DIY applications Renovation work Car repairs Sealing for boat construction on boat decks and at portholes Bonding of glass panes for the con struction of small aquariums Applications YOUR PROOF OF UNCOMPROMISING QUALITY WACKER SILICONE SEALANTS Excellent Properties Easy to process Optimum adhesion Weathering and aging resistant Resistant to UV and radioactivity Tailored mechanical values High elasticity and good elastic recovery Good chemical resistance High heat resistance Microbial resistance 40 C 100 r h Layer thickness mm 23 C 50 r h 50 C 15 r h 5 C 30 r h Curing rate of silicone sealant rises with atmospheric humidity 8 10 12 x Time mm It s All About Performance Silicone sealants are the reliable way to seal joints against the elements At the same time they cushion movements between parts resulting from temper ature changes humidity shrinkage of construction material sound wind and other mechanical shocks
7. natural stone Construction profile glass joints Connection joints between the construction material and functional elements Connection joints in cellars Movement joints in garages Outdoor floor joints for balconies roof terraces patios Indoor floor joints between the floor covering and wall Indoor corner butt joints where walls meet In windows and glazing different materi als with different properties come into contact with one another WACKER silicone sealants are suitable for every application Perimeter sealing Window sealing Roof glazing Greenhouse glazing Swimming pool glazing Joining of display windows Fire safety glazing Sanitary applications Roofs roof plumbing MAS Hobbies DIY WACKER silicone sealants for sanitary applications are tailored to withstand the stresses from moisture and mechanical and chemical effects The products are resistant against mold growth They are suitable for Joints between wall and floor Joints in the corners of walls Joints between sanitary fittings wall and floor e g washbasins bathtubs showers and toilets Joints in the kitchen such as at walls floors work surfaces and cookers The roof is another place where
8. not alter its mechanical properties The growth of mildew on joints can be prevented by regular cleaning and adequate room ventilation Physiological Behavior Cured silicone sealants pose no physi ological risks Specialty ELASTOSIL grades are available for applications involving food and drinking water contact Gunnability and Curing RTV 1 silicone sealants are ready for use On contact with atmospheric humi dity the incorporated crosslinker and the polymer react together and the sealant cures to form an elastic silicone rubber This is why silicone sealants are supplied in moisture proof packaging As a result of the effects of weather at low temperatures and the considerable elongation of construction elements at high temperatures it is advisable to process silicone sealants at temperatures between 5 and 40 C as specified in DIN 18 540 Compatibility with Coating Compounds Do not paint over the entire surface of silicone sealants Most coatings are less elastic than the sealant So if the sealant stretches more than the coating the coating may tear Movement joints should therefore only be painted over if the sealant movement does not exceed 5 The sealant must always be compatible with the coating documentary support to be provided in compliance with DIN 52 452 Part 4 Thermal Conductivity The thermal conductivity of silicone sealants depends on the type and amount of fillers used It varies from 0 15
9. solutions Silicone sealants swell in solvents such as ketones esters ethers aliphatic aromatic and chlorinated hydrocarbons Once the solvent has evaporated the sealant re assumes its original form Electrical Properties The volume resistivity dielectric strength dielectric constant and dissipation factor tan 6 of silicone sealants have only slight temperature dependency They conse quently behave more advantageously at higher temperatures than conventional elastomeric insulation materials On burning they leave behind a non con ductive silica residue This is the reason for their excellent tracking resistance Thanks to their hydrophobic properties silicone sealants do not substantially alter their electrical values even if con ditioned in water Gas and Water Vapor Permeability At room temperature silicone sealant is 10x more permeable to gas than natural rubber At 100 150 C the values con verge The water vapor permeability as determined in accordance with DIN 53122 under climatic conditions D and a film thickness of 2 mm is about 20 g m d Anti Microbial Characteristics Use only fungicidal grades of silicone sealant for sanitary applications They are resistant to mildew infestation All the same fungi can accumulate on the surface of dirty silicone sealants parti cularly in warm and moist conditions occurring in bathrooms and kitchens This causes discolored patches on the sealant surface but does
10. to 0 25 W K m at room temperature DIN 52 612 Storage Stability If stored in airtight containers in dry conditions at temperatures below 25 C the shelf life of WACKER silicone sealants ranges from 9 to 24 months Application Restrictions Silicone sealants may stain on contact with organic elastomers such as EPDM and Neoprene Sanitary sealant grades containing fungicides must not be used to construct aquariums Acetate curing sealants are not com patible with alkaline substrates such as mortar concrete and corrosion sensitive metals Silicone sealants do not adhere to polyethylene and polytetrafluoroethylene Standard silicones may not be used to join sensitive natural stones such as marble granite or quartz as this may cause staining at the joint edges On contact with prestressed polyacrylic and polycarbonate components silicone sealants may cause stress cracking Specialty Solutions Furthermore WACKER offers tried and tested product solutions for specialty applications such as fire safety If you have any questions WACKER s techni cal service team will be happy to help you 21 Properties STANDARDS AND QUALITY Requirements Sealants must comply with international and in some cases national standards that define the requirements to be met by sealants for the intended application The relevant criteria are listed in test and regulatory standards Material pro pert
11. KER is a technology leader in the chemical and semiconductor industries and a worldwide innovation partner to customers in many key global sectors With 15 000 employees WACKER generated sales of 3 78 billion in 2007 Germany accounted for 19 of sales Europe excluding Germany for 27 North and South America for 17 and Asia Pacific including the rest of the world for 37 Headquartered in Munich Germany WACKER has 27 production sites worldwide and a global network of over 100 sales offices WACKER SILTRONIC is one of the world s leading producers of hyperpure silicon wafers supplying many major chip manufacturers Siltronic devel ops and produces wafers up to 300 mm in diameter at facilities in Europe the USA Asia and Japan Silicon wafers form the basis of state of the art micro and nanoelectronics used for example in computers telecommunications motor vehicles medical technology consumer electronics and control systems WACKER SILICONES is a leading supplier of complete silicone based solutions that comprise products services and conceptual approaches As a provider of solutions the business divi sion helps customers press ahead with innovations exploit global markets fully and optimize business processes to reduce overall costs and boost productiv ity Silicones are the basis for products offering highly diverse properties for vir tually unlimited fields of application rang ing fro
12. That is why your silicone sealant should offer all out quality Providing customized properties for permanently flexible compounds WACKER RTV 1 silicone sealants are cold curing one component silicone rubber grades for very high performance in every respect These sealants are certified worldwide to comply with all important standards and regulations The Ingredients Are Crucial WACKER silicone sealants are made only from top quality raw materials They include Silicone rubber polymers Silicone plasticizers Silicone crosslinkers Silicone adhesion promoters Reinforcing fillers e g pyrogenic silica Non reinforcing fillers such as silicates and chalks depending on the application Optional additives such as emulsifiers pigments fungicides Three Curing Systems WACKER s ready for use silicone sealant is introduced as a paste is non slump does not sag and cures directly in the joint Curing drying is triggered by atmospheric humidity Initially an elastic skin is formed on the surface Curing then spreads inwards until an elastic rubber is obtained There are three different systems which each depend on the crosslinker used in the RTV 1 silicone sealant Acidic systems release acetic acid upon curing Neutral systems release alcohol or oxime Aqueous systems release water THE MOST IMPORTANT FIRST DESIGNING JOINTS Joint spacing Joint width Joint w
13. ching the sealant to the joint materials to avoid adhesion problems example metal or acrylic bathtubs expand to different extents Triangular joint with adhesion on all sides without backing Correct Triangular Joint Joints that undergo just slight move ments can be designed as triangular joints These include connection joints in vertical corners of washrooms and connection joints to washbasins and toilets Floor wall joint as border joint with backing version 1 Correct Border Joints between the Floor and Wall Joints between the floor and walls often undergo considerable movements due to construction subsidence or shrinkage of for example the screed When designing this kind of joint always use backing material to avoid three sided adhesion Floor wall joint as border joint with backing version 2 The structural design does not however always make this possible Simple trian gular joints are formed instead In this case be careful not to exceed the sealant s movement capability otherwise adhesion losses may occur 15 Processing FOR ALL ROUND WEATHERPROOF WINDOW JOINTS HOW TO DO IT The window sector involves a great many forms of sealing As a result some of the demands to be met by a sealant vary enormously An ideal combination of useful properties makes WACKER silicone sealants suitable for all key applications Connection joints between the window fram
14. e and masonry Sealing between glass and frame Sealing and bonding of aluminum windowsills Profiled glazing 16 Window masonry connection Window sealing glass frame bonding High Performance The silicone sealant in the window area has to endure extreme load at all times This includes substantial temperature changes variable weather conditions such as sunshine rain snow and frost wind pressure and considerable move ments between structural elements made of different materials The sealant therefore combines the functions of weatherseal seal and bond When choosing the sealant make sure it is tailored precisely to these demands If work is done professionally you will obtain high performance joints of lasting quality Sealing and bonding of aluminum windowsills WACKER silicone sealants offer outstanding properties for all window applications Excellent weatherability Superior UV resistance Optimum material compatibility High elasticity Low shrinkage Special adhesion properties Good mechanical values High aging resistance Ideal tooling characteristics Profiled glazing MN 17 Processing COMBINING PRACTICALITY AND APPEARANCE FACADE JOINTS Masonry joints Jointing between the supporting skeleton and the exposed wall face Visible Joints Joints on building facades are
15. e sealant must adhere well to the surfaces that are being joined The resultant tensile compressive and shear forces must not cause the sealant to detach from the joint surfaces Processing PERFECT JOINTS DEMAND CARE STEP BY STEP Clean surface with a cloth Surface Cleaning The joint flanks adhesive surfaces must be dry and free of grease and dust Remove loose plaster dirt old paint coats seals impregnations etc as they impair the silicone sealant s adhesion and curing Precautions Upon curing RTV 1 silicone sealants release small amounts of acetic acid oxime or alcohol which evaporate Do not inhale the fumes over a long period or in a high concentration Make sure there is adequate ventilation If the eyes or mucous membranes come into contact with uncured silicone rubber rinse well with water to prevent inflam mation Cured silicone rubber can be handled without any health risks Please consult the detailed information in our products DIN compliant material safety data sheets They are available from WACKER sales offices 10 Mask joint edges Preparing Joints Carefully mask off the joint edges of sensitive materials such as marble and clinker brick In many cases it may be necessary to treat the joint surfaces with a primer to ensure optimum adhesion of the silicone sealant This treatment will be determined by the actual substrate and sealant Important
16. e their physical properties Extreme Temperature Resistance The elastic properties of silicone sealants stay almost constant between 40 C and 100 C This is a major advantage over sealants made of organic polymers In consequence silicone sealants can very readily compensate temperature induced movements of structural ele ments Silicone sealants have excellent resist ance to high temperatures Specialty grades are even permanently resistant to temperatures up to 250 C It is important to let the silicone rubber cure completely before it is exposed to high temperatures The movement capability is the sum of the elongation and compression of a sealant while in use For silicone sealants it varies from 20 to 25 of the initial joint width as measured in accordance with ISO 11 600 Adhesion Silicone sealants adhere very well to a great many substrates without primer pre treatment In some cases pretreatment with a primer page 10 is necessary This will depend on the actual material in use Glass ceramic paint and surface coatings do not prime Porous substances exposed to moisture prime Smooth plastics metals key and prime No lasting adhesion to substrates with migrating constituents plasticizers bitumen oils etc Chemical Resistance Cured RTV 1 silicone sealant products are resistant to the action of many chemicals such as weak acids and alkalis polar solvents and salt
17. idth Joint sealant depth Joint sealant depth Nominal size b mm Min size byjn mm dmm Dimensional tolerances mm Up to2m 15 10 8 2 2to 3 5m 20 15 10 2 3 5 to 5 m 25 20 12 2 5 to 6 5 m 30 25 15 3 6 5 to 8 m 35 30 15 3 Nominal design dimension Min size at start of joint sealing The quoted volumes apply to the final state The volume change of the joint sealant must also be taken into account Key Criteria Appearance Tensile and compressive forces and shear loads Dimensional changes Sealant s movement capability Recommendations for outer wall joints between in situ and or prefabricated concrete elements with closed joints as well as unplastered masonry and or natural stone in accordance with DIN 18 540 Things to Watch Alongside visual aspects the design of joints must include structural and pro cessing considerations because only if the design specifications have been implemented properly can the sealant function in the long term too A silicone sealant is intended to seal the joint from outside influences while simultaneously cushioning movements by adjacent ele ments In other words the sealant must compensate tensile compressive forces and shear loads between the joint sur faces This will depend on the reliable adhesion of the sealant to the joint sur faces and avoidance of three sided adhesion since this prevents movements of the material and damages the joint The
18. ies must be checked in accordance with such standards WACKER silicone sealants comply with all relevant stan dards These include Test standards ISO 7 389 Building construction jointing products determination of elastic recovery of sealants ISO 7 390 Building construction jointing products determination of resistance to flow of sealants ISO 8 339 Building construction sealants deter mination of tensile properties extension to break ISO 8 340 Building construction sealants deter mination of tensile properties at main tained extension ISO 8 394 Building construction jointing products determination of extrudability of one component sealants ISO 9 046 Building construction jointing products determination of adhesion cohesion properties at constant temperature 22 ISO 9 047 Building construction jointing products determination of adhesion cohesion properties at variable temperatures EN 29 048 Building construction jointing products determination of extrudability of sealants using standardized equipment ISO 10 563 Building construction sealants deter mination of change in mass and volume ISO 10 590 Building construction sealants deter mination of tensile properties of sealants at maintained extension after immersion in water ISO 11 431 Building construction jointing products determination of adhesion cohesion pro
19. ieve optimum joint sealing insert PE rods as backing material before jointing The joint thus stays in the correct shape and is sealed reliably and the elements can move freely There are many applications for the three types of joints mentioned above Over the following pages we will pre sent a few examples 13 Processing ONLY PROFESSIONALLY MADE SANITARY JOINTS FUNCTION PROPERLY PERMANENTLY Silicone sealants in bathrooms and kitchens must not only compensate for movements between structural elements They also have to meet a variety of different demands Functional and long lasting sanitary joints therefore require specialty sealants and a professional jointing technique 14 Bathtub connection joint with backing material version 1 WACKER silicone sealants have ideal properties High resistance to water and water vapor Resistance to mildew thanks to fungicidal grades Good resistance to chemicals and considerable aging resistance Excellent abrasion resistance Large range of colors Bathtub connection joint with backing material version 2 Correct Design The major criteria for designing and implementing sanitary joints are Correct joint arrangement and dimensioning Matching colors Avoidance of insufficient sealant volume Avoidance of incorrectly executed triangular chamfers and three sided adhesion Mat
20. joint surfaces themselves must be stable and firm so as to absorb forces How to Calculate Joint Dimensions Only correctly dimensioned joints function properly When designing the width depth and configuration of joints and when choosing a sealant always take account of dimensional changes in construction elements produced for example by temperature changes Fixed factors are available for calculating the dimensional changes experienced by different construction materials Also do not neglect the sealant s move ment capability Example if a 5 mm joint moves 5 mm this is 100 of the width whereas if a 25 mm joint moves 5 mm the change is 20 Joint dimensioning a chamfer b joint width d sealant depth t depth of sealing system I Silicone sealant Backing material Compressive and tensile forces General Joint width joint depth 2 1 Chamfer the edges of concrete ele ments to a gt 10 mm This prevents adhesion of the sealant on all sides of the joints Masonry construction elements must be produced with completely filled joints Smooth off the masonry joints to produce a flush surface In special cases such as dark walls increase the values given in the table by 10 30 Temperature changes cause construction elements to move This alters the joint dimensions The elastic silicone sealant in the joint compensates for these movements Th
21. m the automotive construction chemical electrical engineering and elec tronics industries through pulp and paper cosmetics consumer care and textiles to mechanical engineering and metal processing WACKER POLYMERS is the global leader for high quality bind ers and polymer additives This business division s activities encompass construc tion chemicals and functional polymers for lacquers surface coatings and other industrial applications as well as basic chemicals i e acetyls Products such as dispersible polymer powders disper sions solid resins powder binders and surface coating resins from WACKER POLYMERS are used in the construction CREATING TOMORROW S SOLUTIONS automotive paper and adhesives industries as well as by manufacturers of printing inks and industrial coatings WACKER POLYSILICON has been producing hyperpure silicon for the semiconductor and photovoltaics industries for over 50 years As one of the largest global manufacturers of polycrys talline silicon WACKER POLYSILICON supplies leading wafer and solar cell manufacturers WACKER FINE CHEMICALS As an expert in organic synthesis silanes and biotechnology WACKER FINE CHEMICALS supplies innovative biotech products and catalog chemicals for life science and consumer care customers worldwide Its product portfolio includes cyclodextrins and cysteine organic intermediates and acetyl acetone A key specialty is the contract manufac
22. o process which makes them especially easy economical and time saving to use We re Here to Help You As a globally leading manufacturer of silicone sealants WACKER has extensive technological expertise in general purpose and tailored solutions For over fifty years the company has invested strongly in R amp D so that a wide range of time tested innovative silicone sealants is now at your disposal Our fully integrated silicone production based on a reliable raw materials supply is the foundation for the consistently high and dependable quality standard You can equally depend on our global presence comprehensive advice and technical support We expect not just our products to stand out but also our overall performance This manual is designed to help you get the best work results because it covers key information on the appli cations processing and properties of WACKER silicone sealants If you have any further questions please contact our technical service team Applications IN THESE AREAS SILICONE SEALANTS ARE ABOVE ALL ONE THING INDISPENSABLE 1 Housing 2 Windows and glazing 3 Sanitary applications and fittings 4 Roofing and roof plumbing 5 DIY gt Z WACKER silicone sealants can be used both inside and outside Facade joints Natural stone joints important to avoid staining choose the sealant to match the type of
23. perties of sealants after exposure to heat water and artificial light through glass ISO 11 432 Building construction jointing products determination of resistance to com pression ISO 846 Plastics evaluation of the action of microorganisms Regulatory standards ISO 11 600 Building construction jointing products classification and requirements for sealants DIN 18 540 Sealing of exterior wall joints in buildings using joint sealants DIN 18 545 2 Sealing of glazing with sealants sealants designation requirements testing Quality is our Hallmark At WACKER SILICONES everything is geared toward quality That applies just as much to our products as to our service Day in day out our chemists and applications technologists work to perfect our products and so continually enhance quality Regular audits and strict quality controls ensure that all products leaving our plants enjoy a consistently high level of quality Quality has a long tradition at WACKER As early as 1994 WACKER SILICONES quality management system was certi fied to ISO 9001 This was followed in 1998 with certification of the environ mental management system It is to our customers benefit that we use the entire integrated management system for quality occupational health amp safety and environmental protection for the continual optimization of our activities products and services WACKER AT A GLANCE WAC
24. turing of pharmaceutical proteins via microbial systems 04 08 The data presented in this brochure are in accordance with the present state of our knowledge but do not absolve the user from carefully checking all supplies immediately upon re ceipt We reserve the right to alter product constants within the scope of technical progress or new developments The information given in this brochure should be checked by pre liminary trials because of conditions during processing over which we have no control especially where other companies raw materials are also being used The information provided by us does not absolve the user from the obligation of inves tigating the possibility of infringement of third parties rights and if necessary clarifying the position Recommendations for use do not constitute a warranty either express or im plied of the fitness or suitability of the product for a particular purpose SILICONES Wacker Chemie AG Hanns Seidel Platz 4 81737 M nchen Germany Tel 49 89 6279 0 info siliconesOwacker com www wacker com WACKER SILICONES Infoline Tel toll free Germany 0800 6279 800 Tel toll free international 800 6279 0800 info siliconesOwacker com www wacker com 6188e 06 08 reissue edition 6188e 03 07
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