Double glazing sealant
STC Double glazing sealantis a high-performance 2K silicone sealant designed specifically for insulated glass units (IGU). With excellent adhesion, weather resistance, and long-term durability, this sealant ensures airtight and watertight sealing for structural glazing and double glazing projects. The insulating glass silicone Ideal for both commercial and residential applications, our 2k silicone sealant provides superior performance under extreme temperature variations and harsh weather conditions.
Key Features of Double glazing sealant
- Two component (2K) silicone formulation
- Excellent adhesion to glass, aluminum, and other substrates
- Superior weatherproofing and UV resistance
- Long-lasting durability for structural glazing and double glazing
- Easy application with standard caulking tools
Applications of Double glazing sealant
- Insulated glass units (IGU)
- Double glazing windows and doors
- Curtain wall glazing
- Structural glazing and façade installations
Specifications of insulating glass sealants:
| Property | Typical Value | Test Standard |
|---|---|---|
| Base | Silicone Rubber | ASTM C920 |
| Color | Com A White / Com B Black | Visual |
| Shore A Hardness | 28-35 | ASTM D2240 |
| Tack-Free Time | 45-60 min | ASTM C679 |
| Curing Time | 12-16 hours to allow glass movable (depends on temperature & humidity) | ASTM C679 |
| Service Temperature | -40°C to +150°C | ASTM C792 |
| Elongation at Break | ≥ 200% | ASTM D412 |
| Tensile Strength | ≥ 1.10 MPa | ASTM D412 |
| Storage Life | 18 months | Sealed c |
Packing of insulating glass silicone sealant
- 200L / 20L bulk drum (customized packaging available)
- 20L/2L barrel packing
Storage
- Store in a cool, dry place below 25°C
- Keep away from direct sunlight and moisture
- Shelf life: 18 months in original unopened packaging
How to Use
- Surface Preparation: Ensure surfaces are clean, dry, and free of dust, oil, or old sealant. Use appropriate primer if necessary.
- Mixing: For 2K systems, mix base and curing agent in the correct ratio (usually 10:1 by volume).
- Application: manuel or automatic dispensing machine to apply sealant into the glass.
- Tooling: Smooth the surface with a spatula or similar tool within the tack-free time.
- Curing: Allow 24-48 hours at 25°C and 50% RH to fully cure.
- Cleaning: Uncured sealant can be removed with solvent; cured sealant can only be removed mechanically.
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