69 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 temperature of up to 1800F with negligible, if any shrinkage.Set time: 30 minutes.Temperature resistant upto 1800F.
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