One Part Moisture Curing Silicone - Sealant
SikaSil-GP is a one part moisture curing silicone sealant suitable for use in a broad range of applications. It is easy to apply and offers excellent adhesion to a variety of non-porous substrates such as glass, glazed ceramic tiles and aluminum.
- May be applied with ease in all seasons and ideal for cold climates
- Excellent gunability
- Fast Cure - Move assembled or sealed parts quickly
- Good weatherability, virtually unaffected by sunlight, rain, snow and temperature extremes
- Excellent adhesion, bonds to many substrates without priming
- Excellent flexibility for dynamic joint movement and dissimilar materials
- Provides mildew resistance on sealant surface.
Sealing and glazing of windows, doors and skylights. Conventional glazing and storefronts. HVAC, plumbing, roofing. Sealing trucks, trailers and RVs. Marine applications. Appliance assembly.
HOW TO USE IT
The number of joints and the joint width should be designed for a recommended joint movement of +/- 25% at time of installation. The depth of the sealant should be 1/2 the width of the joint. The minimum sealant depth is 3 mm (1/8 in), the maximum is 1 mm (1/2 in). To control the sealant depth, use a closed cell polyethylene, non-gassing polyolefin or open cell polyurethane backer rod. Closed cell backer rod should be 25% larger than joint width; do not compress more than 40%. Open cell should be compressed 40%. Do not use open cell rod in horizontal on grade joints. If the joint depth does not allow for a backer rod, use polyethylene bond breaker tape to prevent three-sided adhesion.
Surface Preparation: The substrate must be clean, dry, frost free, sound and free of any oils, greases or incompatible sealers, paints or coatings that may interfere with adhesion.
Porous Substrates: Clean by mechanical methods to expose a sound surface free of contamination.
Non-porous substrates: For cleaning non-porous substrates, use two cloth cleaning method using xylene, isopropyl alcohol or an approved, clean, pure non-diluted industrial grade solvent. Allow solvent to evaporate completely prior to sealant application. Strictly follow solvent manufacturer's warnings and instructions for use.
Pre-treatment: Sikasil-GP is designed to obtain adhesion without the use of a pre-treatment; however, certain substrates may require a pre-treatment. Test by applying the sealant and/or pre-treatment sealant combination to confirm results and proposed application methods. Refer to Product Data Sheet for Sika Aktivator-205.
Application: In all cases, make sure the joint design is correct. Proper joint design minimizes stresses on the sealant. Use masking tape if desired for areas adjacent to the joint to be sealed to prevent surface contamination. Apply sealant to dry, clean surfaces. Do not break cartridge seal until just before use. Surfaces should be dried before the sealant is applied.
Tooling and finishing: Tool joint, if necessary, and remove masking tape. Tooling should be completed in one continuous stroke. Tool immediately after sealant is applied and before a skin begins to form. Dry tool - do not use soap, water or oil as a tooling aid. Remove masking tape immediately after tooling is completed. Complete tooling within 5 minutes of sealant application.
Removal: Uncured Sikasil-GP may be removed from tools and equipment with solvents such as isopropyl alcohol or xylene if cleaned before sealant has begun to cure. Strictly follow solvent manufacturer’s instructions for use and warning statements. Once cured, the material can only be removed mechanically. Hands and exposed skin should be washed with soap and water immediately after use. Do not use solvents on skin.
Cleanup: 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 manufacturer’s 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.
Do not Use: Do not apply to surfaces that are to be painted, as the sealant surface will not hold paint. Do not apply to surfaces sensitive to corrosion by acetic acid or vapours. Do not apply to damp or wet surfaces. 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.
Caution: Always use a sealer such as shellac, before topcoating with a lacquer. Not recommended for use on horizontal surfaces where water may collect, or for marine use on areas below water level
Storage: Storage below 77°F (25°C). Use reasonable care and store away from oxidizing materials. Keep container closed and store away from water or moisture.
Note: Priming is never a substitute for proper surface cleaning and preparation. Do not open the product container until preparation and, where necessary, priming work has been completed. Do not use spray water or other liquids when tooling.
Glass, tile, fiberglass, plastic, ceramic, wood and painted metals
|PRODUCT SIZES:||10.1 oz (cartridges).||TACK-FREE TIME:||25 min.|
|SHEER STRENGTH:||300 psi.||ELONGATION:||570%|
|APPLICATION TEMPERATURE:||40 – 140°F.
||CURE RATE:||3 mm (1/8 in)/24 hrs.|
|PRODUCT FORM:||Solid (Paste).||PROJECTS:||Commercial. Residential.|
|COVERAGE:||12.2 Linear ft of 0.5 X 0.25 in Joint.||BASED:||1-C Silicone.|
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