OSI 149 HM270 Construction Silicone Sealant
149
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Temperature extremes are no match for HM270 - an acetoxy silicone that withstands harsh conditions from -76 Degree Fahrenheit to 350 Degree Fahrenheit without missing a beat. Designed for use on non-porous materials, its application possibilities include a variety of tough challenges-ceiling skylights, solar panels, duct work, aluminum siding, recreational vehicles and more. With 25% joint movement, it's also permanently flexible.