Metacaulk 10.15 Oz 835+ Firestop Sealant

Metacaulk® 835+ is for applications that require a silicone-based firestop. Designed for use with PVC pipe on closed (pressure) systems, EMT, insulated and uninsulated steel pipe, construction and control joints and interior expansion joints. Flexible, non-sag and low odor sealant for exterior or interior use. Used in systems where dynamic movement is expected. Sound Transmission Class (STC) rating 55, Tested in a UL 411 wall assembly/section to ASTM E90.