J-B Weld ExhaustWeld 2" x 72" Repair Wrap, White

J-B Weld ExhaustWeld 2" x 72" Repair Wrap is a fiberglass repair wrap pre-impregnated with high-temperature resin for sealing and reinforcing exhaust components up to 1100°F once cured.

If you need a durable, heat-resistant solution to patch or reinforce exhaust pipes, mufflers, manifolds, tailpipes or catalytic converter areas without replacing entire components, this repair wrap provides a hands-on fix. The 2-inch width and 72-inch length give enough coverage for many common repairs, and the formula is designed to cure with or without supplemental heat—speeding repair time when the engine is run or a heat gun is used. It’s intended for mechanical and automotive use where high temperature tolerance and structural reinforcement matter.

How quickly will this repair wrap set and fully cure?

The wrap begins to set in about 20 minutes even without added heat, and fully cures within approximately two hours under ambient conditions. Applying heat from a heat gun or running the engine accelerates the process, allowing it to set in roughly 20 minutes and cure faster overall.

• Sets in ~20 minutes without external heat
• Cures in ~2 hours at room temperature
• Heated application speeds curing when engine is run or heat gun used

Where on my exhaust system can I use this wrap?

The wrap is formulated for use across the exhaust system: manifolds, catalytic converters, mufflers and tailpipes are all suitable applications when heat resistance and sealing are required. It’s ideal for temporary or semi-permanent repairs and reinforcement where welding or part replacement is impractical or time-consuming.

• Suitable for manifolds and header repairs
• Works on mufflers, tailpipes and clamps
• Can be wrapped around catalytic converter housings for reinforcement

What temperature range and mechanical properties should I expect after curing?

Once fully cured, the fiberglass wrap with its special resin withstands temperatures up to 1100°F, making it appropriate for most exhaust heat zones. The cured material provides structural reinforcement and a sealed surface but is not identical to factory welded metal; it delivers strength and resistance tailored to high-heat exhaust environments.

• Heat resistance up to 1100°F when cured
• Fiberglass base for tensile and abrasion resistance
• Special resin designed for high-temperature stability

How do I apply the ExhaustWeld wrap for best results?

Clean and de-grease the repair area, then wrap tightly with overlapping turns to build a consistent layer. Apply engine heat or a heat gun during or after wrapping to accelerate cure; allow recommended cure time before exposing to full operating conditions for optimal performance.

• Remove rust, oil and loose material before wrapping
• Overlap each turn for continuous coverage and strength
• Use heat to shorten set/cure time and improve adhesion

Who is this for: J-B Weld ExhaustWeld 2" x 72" Repair Wrap is aimed at mechanics, DIY motorists and fleet maintenance teams who need a compact, high-temperature repair option for exhaust systems. It’s suited for anyone requiring a fast, heat-resistant wrap to patch leaks, reinforce worn sections, or temporarily restore exhaust integrity when replacing parts isn’t feasible immediately.