Sika® Sikasil® GP

Product Data Sheet Version 032011 052012 Sikasil GP General-Purpose Acetoxy-Cure Silicone Technical Data Chemical Base 1-C Silicone Colour White Black Aluminium Clear Cure Mechanism Moisture Cure Type Acetoxy Density uncured 0.98 KgL approx VOC 36 gL Non-sag Properties ASTM C-639 Non-Sag Industry Skin Time MNA Method Application Temperature 10 minutes product substrate and air -32oC to 40oC -26 to 49oC Tack-Free Time1 ASTM D-679 15 minutes Curing Speed MNA Method 3 mm - 24 hours Shrinkage nil Shore A Hardness ASTM C-661 25 - 5 Tensile Strength ASTM D-412 1.51 MPa approx Elongation at Break ASTM D-412 350 Peel Strength ASTM C-794 35 Ncm Movement Capability ASTM C-719 Service Temperature permanent intermittent Shelf Life Storage below 32oC 1 Description -25 -62 to 232oC 260oC 12 months 25 C and 50 Relative Humidity o SikaSil-GP is a general-purpose one-component non-sag elastomeric 100 RTV acetoxy silicone sealant. Meets the equirements of ASTM C-920 Type S Grade NS Class 25 Use NT G A O TT-S-01543A Class A CANCGSB-19.13-M87 recognized under UL MFZ2 MIL-A- 46106 ANSINSF Standard 51 for direct food contact and California Air Resources Board 2003 requirements for Volatile Organic Compound content. Maintains elastomeric properties up to 232oC continuous 260C intermittent. Meets federal specification TT-S-005143A Class A. Product Benefits One-component - ready for use Excellent for dynamic joint movement and dissimilar materials accommodates joint movement of - 25 Excellent adhesion bonds to many substrates without priming Fast-cure - assembled or sealed parts can quickly be moved Wide service temperaturedurability Superior gunning and tooling High temperature resistance - up to 260C Anti-microbial additive for mould resistance Excellent weathering resistance. Sikasil GP Areas of Application Sealing and glazing of windows doors and skylights Conventional glazing and store-fronts Kitchen and bath countertops sanitary seals HVAC plumbing roofing Sealing truck

s trailers and RVs Marine applications Applicance assembly. Typical Substrates Glass aluminium tile fibreglass plastic ceramic wood steel and painted metals. Cure Mechanism Sikasil-GP cures by reaction with atmospheric moisture. At low temperatures the water content of the air is lower and the curing reaction proceeds more slowly. Industry Sikasil GP Curing Speed Chemical Resistance Sikasil GP is resistant to UV radiation fresh water seawater and proprietary aqueous cleaning agents temporarily resistant to fuels mineral oils vegetable and animal fats and oils and not resistant to organic acids concentrated mineral acids caustic solutions and solvents. The above information is offered for general guidance only. Please consult Sika Canada Inc.s Technical Services for advice on specific applications. Application Limits Not intended for structural glazing or for porous substrates such as concrete stone marble and granite The minimum sealant depth is 3 mm 18 in the maximum is 13 mm 12 in Do not apply to surfaces sensitive to corrosion by acetic acid or vapours Lower temperature and humidity will extend tack free and cure rates Do not apply to damp or wet surfaces May be applied below freezing temperatures if substrates are completely dry frost free and clean. Contact Sika Canada Technical Services for more information Do not apply to surfaces that are to be painted as the sealant surface will not hold paint Do not apply to substrates that bleed oil plasticizers or solvent Do not allow the uncured material to come in contact with solvent or curing polyurethanes This material is not intended for long term immersion in water Test sensitive substrates such as mirror backings for compatibility before use Allow treated wood to age for at least six months before application of the sealant. Surface Preparation All joint surfaces must be clean sound dry frost-free and free of any oils grease or incompatible sealers paints or coatings that may interfere with adhesio

n. Porous substrates should be cleaned by mechanical methods to expose a sound surface free of contamination. Non-porous substrates should be cleaned by using a solvent wipe method applied by lint free and clean rags and allow the solvent to evaporate before installing the sealant. Xylene or an approved commercial solvent can be used ensuring the solvent manufacturers instructions are strictly followed. Priming Sikasil-GP is designed to obtain adhesion without the use of a primer however certain substrates may require priming. Consequently prior testing of the adhesivesealant with and without priming is required to determine which method is appropriate. For assistance and advice contact Sika Technical Services. Sikasil GP Industry Application This product is suitable for bulk dispensing straight from drums or pails by means of a pneumatic or hydraulic pump system. For recommendation on selecting and setting up a suitable pump system please contact our Technical Services. As Joint Sealant Make sure joint design is correct. For best performance Sikasill GP should be gunned into joints when joint slot is at the mid-point of its designed expansion and contraction. Do not open the product container until preparation and where necessary priming work has been completed. Apply the sealant using a professional caulking gun or dispensing equipment. Place the nozzle deep into the joint and gun with a steady and even flow of sealant preceding the nozzle to avoid air entrapment. Also avoid overlapping of the sealant as this also entraps air. Extrude in one continuous operation with consistent positive pressure to force the material into the joint. As Bonding Adhesive Apply using caulking gun dispensing equipment or trowel. Use sufficient quantity of adhesive on one or both substrates to provide designed contact area. If needed use fasteners or temporary support to hold substrates until adhesive has cured. Cure times vary with temperature humidity and porosity of joined substrat

es. Tooling and Finishing Tool the sealant at once after application and before a skin forms approximately 10 minutes. Tool to a concave shape and ensure adequate pressure to achieve maximum adhesion with the joint walls. Dry tooling is recommended. Note Do not use spray water or other liquids when tooling. Removal Clean all tools and equipment and remove excess sealant from substrates all while the material is uncured using a commercial solvent such as xylene. Strictly follow the manufacturers instructions for use and warnings. Once hardened product can only be removed mechanically. Wash soiled hands and skin thoroughly in hot soapy water or use Sika Hand Cleaner towels. Over-Painting Sikasil GP cannot be overpainted. Further Information Copy of the following publication is available upon request Material Safety Data Sheet. Packaging 24 x 295 ml Cartridges per Case 197 Litre Drums White and Clear only Value Bases All technical data stated in this Product Data Sheet are laboratory test-based. Current measured values may vary due to factors beyond our influence. Health and Safety For information and advice on the safe handling storage and disposal of chemical Information products users should refer to the current Material Safety Data Sheet containing physical ecological toxicological and other safety-related data for the appropriate type of substance. Product Data Sheets and Material Safety Data Sheets are available on our website at www.sika.ca or via your local Technical Sales Representative. Sikasil GP Industry The information and in particular the recommendations relating to the application and end-use of Sika products are given in good faith based on Sikas current knowledge and experience of the products when properly stored handled and applied under normal conditions within their shelf life. In practice the differences in materials substrates and actual site conditions are such that no warranty in respect of merchantability or of fitness for a particular purpo

se nor any liability arising out of any legal relationship whatsoever can be inferred either from this information or from any recommendations or from any other advice offered. The proprietary rights of third parties must be observed. All orders are accepted subject to our current terms of sale and delivery. Users should always refer to the most recent issue of the Product Data Sheet for the product concerned copies of which will be supplied on request or can be accessed in the Internet under www.sika.ca. An ISO 9001 certified company Pointe-Claire ISO 14001 certified EMS Sikasil GP