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BOSS PRODUCTS 137747 is a UL Classified intumescent latex firestop sealant. This one-part, elastomeric, intumescent sealant expands when exposed to fire or extreme heat. It exhibits suitable adhesion to almost any surface and remains flexible. Application is best with a caulk gun.
This firestop sealant offers excellent freeze/thaw properties, is safe to use and handle, and allows for water clean-up. It has a 12-month shelf life.
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