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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 to 400 deg 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.
ASTM C920 Specified, Type S, Grade NS, Class 25, Use NT, TT-00230C Type II, TT-S-001543A
APPLICATION
For aluminum siding and windows, duct work, heating/air conditioning units, plastic or metal assemblies, recreational vehicles and other glass, sealing skylights, solar panels, ventilators
WARRANTY
Lifetime Limited
Package Size
10 fl-oz
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Uh oh, it looks like you already have an item in your cart for In-Store Pickup at:
We're constantly working to give you the best hardware shopping experience, but you are only allowed one in-store pickup order at a time. Multiple in-store pickup orders aren't currently supported. Adding the item will clear your current cart and change your pickup location.