Firestop tested up to 4 hours in accordance with ASTM E 814 (UL 1479) & 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 | Smoke seal is L-rated | 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 weatherability during construction