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OSI
HM270 Silicone Construction Sealant - 10 Oz. Cartridge
QXO product C-018603 · 3 options
Explore the colors
Selected: Clear
QXO SKU 22767 · Product number OSI270CL
Free, no-obligation quote. Our team confirms local availability, required quantities, compatible components, and installation pricing.
Selected option specifications
- UOM
- TB
- Item Weight
- 0.6438
- Algae Resistance
- No
- Applicable Standards
- ASTM C920 Type S, Grade NS, Class 25, Use NT Fed. Spec TT-00230C Type II Fed. Spec. TT-S-001543A
About this product
OSI HM270 Construction Silicone Sealant is a medium modulus, one-part RTV silicone sealant designed for glazing and sealing. It cures at room temperature upon exposure to moisture in the air providing good tensile strength and excellent adhesion, usually without the use of a primer, to most nonporous building materials. OSI HM270 easily withstands temperature extremes from -60°F to 400°F without adverse effects. It is highly resistant to ultraviolet light and is virtually unaffected by other harsh environmental elements. OSI HM270 offers superior elasticity and long-life reliability. It forms a permanent watertight and weatherproof bond to materials like glass, ceramics, aluminum, primed steel and some plastics.



