16491 | Firestop Caulk – Red – 10.3 fl. oz. cartridge Pack of 12 | DiversiTech

For professional industrial applications, DiversiTech's Sealant Firestop (SKU: 16491) offers a reliable solution to fire prevention. This 10.3 floz sealant is ideal for sealing penetrations in fire-rated walls and floors, helping maintain the integrity of compartmentalization. Its flame-retardant properties prevent the spread of fire and smoke, ensuring safety and protection. Engineered to meet industry standards, this sealant meets ASTM E814 and UL 1479 requirements. Trust DiversiTech's Sealant Firestop for maximum fire protection in your industrial facility. Order now from our HVAC supply store for the best prices and fast shipping! The DiversiTech® 16491 firestop caulk is U.L. Classified and code approved. It's used to seal penetrations of plumbing, refrigeration, A/C lines, ducts, vents, electrical cable through fire-rated floors, walls and ceilings. It's non-shrinking, non-toxic, and permanently flexible. It blocks fire, gas, smoke, air, and water migration. Use ceramic fiber filler together with putty or caulk for thick penetrations.