JB Weld 37903 Exhaust System Sealant

J-B Weld Exhaust System Sealant is a heat resistant paste that is used to seal gaps, smooth seams or seal pipe connections within an exhaust system reassembly or repair. The paste is resistant to temperatures up to 850°F with negligible, if any shrinkage.

• Temperature resistant sealant
• Withstands heat up to 850ºF / 454ºC
• Sets in 30 minutes
• Non-shrinking