Description
Sikasil®-GP is a one-component acetoxy cure silicone sealant designed for general-purpose sealing and bonding applications. This moisture-curing, non-sag RTV silicone provides flexible, elastomeric performance with reliable adhesion across common construction and industrial substrates, making it suitable for glazing, sealing, and maintenance applications.
Key Features
- One-component acetoxy cure silicone sealant
- General-purpose sealing and bonding for construction and industrial use
- Non-sag consistency for vertical and overhead applications
- Fast skin formation for efficient assembly and sealing workflows
- Good adhesion to a wide variety of substrates without priming
- Maintains elastomeric properties across a wide temperature range
- Resistant to UV, ozone, and temperature extremes
- Contains anti-microbial additive for mold resistance
Technical Specifications
| Specification | Value |
|---|---|
| Chemical Base | 1-component silicone |
| Color | Multiple |
| Cure Mechanism | Moisture-cure |
| Cure Type | Acetoxy |
| Density (uncured) | 8.0 lb/gal |
| Skin Time | 13 minutes |
| Shore A Hardness | 20 |
| Tensile Strength | 220 psi |
| Elongation at Break | 500% |
| Peel Strength | 20 pli |
| Application Temperature | 41 to 104 °F (-5 to 40 °C) |
| Service Temperature (Permanent) | -76 to 350 °F (-60 to 177 °C) |
| Service Temperature (Intermittent) | 392 °F (200 °C) |
| Shelf Life | 24 months |
Compatible Substrates and Materials
- Glass
- Tile
- Fiberglass
- Plastic
- Ceramic
- Wood
- Painted metals
Application Guidance
Surfaces must be clean, dry, frost-free, and free from oils, grease, or contaminants prior to application. For non-porous substrates, solvent cleaning may be required, while porous substrates should be mechanically cleaned. Apply sealant to properly designed joints and tool immediately after application, completing tooling within the skin time. Adhesion testing is recommended for specific substrates and conditions.
Typical Use Cases
- Sealing and glazing of windows, doors, and skylights
- Storefront and conventional glazing
- HVAC, plumbing, and roofing sealing
- Sealing in trucks, trailers, and RVs
- Marine sealing applications
- Appliance assembly and general sealing
Target Industries and Buyers
- Construction and glazing contractors
- HVAC and plumbing professionals
- Transportation and RV manufacturers
- Marine maintenance and repair
- Appliance manufacturers
- General contractors and MRO teams
Performance Advantages
Within the general-purpose silicone sealant category, Sikasil®-GP offers fast curing and broad substrate adhesion combined with durable elastomeric performance. Its resistance to UV exposure and temperature extremes makes it suitable for both indoor and outdoor sealing tasks across a range of industries.
Common Questions
Q: What type of sealant is Sikasil®-GP?
A: It is a one-component acetoxy cure silicone sealant.
Q: Can it be used for glazing applications?
A: Yes, it is suitable for glazing windows, doors, and storefront systems.
Q: Does it require a primer?
A: It bonds to many substrates without priming, though testing is recommended.
Q: Is it suitable for outdoor use?
A: Yes, it is resistant to UV, ozone, and temperature extremes.
Q: Can it be painted?
A: No, it cannot be overpainted.
Q: What is the working time after application?
A: The skin time is approximately 13 minutes under standard conditions.
Q: What surfaces does it adhere to?
A: It adheres to substrates such as glass, tile, fiberglass, plastic, ceramic, wood, and painted metals.
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