SpecSeal® EXC Intumescent Firestop Collars provide reliable firestopping protection for nonmetallic pipes used in both vented systems (DWV) and closed systems, including process piping, supply piping, and electrical conduits. Engineered for versatility and code compliance, these high‑performance firestop collars are approved for use in a wide range of construction types, including concrete floors, concrete over steel deck, solid concrete walls, and concrete block walls. With their robust intumescent technology and durable design, SpecSeal EXC Firestop Collars deliver consistent expansion and sealing during fire exposure, helping prevent the spread of flame through nonmetallic pipe penetrations.