We formulated 3M™ Fire Barrier Water Tight Sealant 1000 NS as a single component, neutral cure, silicone sealant. 3M Fire Barrier Water Tight Sealant 1000 NS is a non-slump, ready-to-use, single component, neutral cure, silicone sealant that cures upon exposure to atmospheric humidity to form a flexible firestop seal.
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