PENOSIL 680 FireStop Intumescent sealant
PENOSIL FireStop Intumescent 680 is an acrylic-based sealant used for fireproofing joints and sealing penetrations in fire-rated structures, withstanding up to 3 hours in linear joints and up to 4 hours around piping.
- The description claims the product withstands fire up to 3 hours in linear joints and up to 4 hours around piping.