OSIĀ® HM270 Construction Silicone Sealant is a medium modulus, one-part RTV silicone formulated for glazing and sealing on non-porous building materials. It cures at room temperature when exposed to moisture, providing stable adhesion and tensile strength without the need for a primer. The sealant withstands temperature extremes and resists UV exposure and environmental elements.
Key Features
- Non-Porous Compatibility: Adheres to glass, ceramics, aluminum, primed steel, and certain plastics.
- Weather and Water Resistance: Provides a permanent watertight and weatherproof bond.
- Flexible Performance: Supports Ā±25% joint movement for a long-lasting seal.
- Temperature Stability: Withstands conditions from -76Ā°F to 350Ā°F.
- Consistent Extrusion: Applies smoothly in varying weather conditions.
Specifications
| Specification | Details |
|---|---|
| Sealant Type | One-part RTV silicone |
| Modulus | Medium modulus |
| Joint Movement | Ā±25% |
| Temperature Range | -76Ā°F to 350Ā°F |
| Coverage (1/4 in bead) | 31 ft per 10 fl. oz. |
| Coverage (3/8 in bead) | 14 ft per 10 fl. oz. |
OSIĀ® HM270 Construction Silicone Sealant is suitable for glazing, curtain wall sealing, and a wide range of general-purpose applications requiring a durable, water-resistant bond.
