3M™ Fire Barrier Water Tight Sealant, 3000 WT, 4.5 gallon (17 L) pail

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"Firestop tested up to 4 hours in accordance with ASTM E 814 (UL 1479) and CAN/ULC S115 Fire Resistance tested for static construction joint systems in accordance with ASTM E 1966 (UL 2079) Meets UL Water Leakage Test, W Rating - Class 1 requirements Compatible for use with CPVC piping Tested in accordance with ASTM G 21 standard practice for determining resistance of synthetic polymeric materials to fungi L-rated smoke seal Minimizes noise transfer (STC-rating of 53 when tested in STC 54-rated wall assembly) Sag-resistant, halogen-free formulation Applied with conventional caulking equipment (excellent adhesion and caulk rate) Excellent weatherability during construction Re-enterable/repairable Light grey colour with black flecks, no mixing required"