US Part Number: 80331
Canada Part Number: 90331

Permatex® Muffler & Tailpipe Bandage

Epoxy-impregnated fiberglass bandage chemically welds mufflers and tailpipes. Permanently repairs holes and leaks in exhaust systems saving costly part replacement. Seals out poisonous fumes to temperatures of 800°F (426?C).


Suggested Applications: Mufflers and tailpipes on automobiles, trucks, tractors and farm equipment.

US Item #CDN Item #Container SizeCase
803319033184 sq. in. bandage, carded12
8033290332120.54 sq. in., 12 MB-2 carded (jumbo size)12
US Item #Tech Doc File
80331SDS  Canada part # SDS
80332SDS  Canada part # SDS


NOTE: Wear gloves to protect your hands from hot exhaust system.

  1. Wire brush or sand to remove loose rust and dirt. Repair area must be clean. Run car 5-10 minutes before applying bandage.
  2. Peel backing from bandage. Wrap bandage around damaged area, overlapping the edges at least 1/2"; for extra protection, overlap edge 1".
  3. Secure bandage temporarily on both ends with wire.
  4. Run car 30 minutes. Heat from the exhaust system welds the epoxy resin in the bandage to a solid coating.For a lasting repair, use Permatex® Muffler and Tailpipe Putty over damaged area before applying bandage.
print instruction print

Tech Documents

Type the appropriate five-digit US Or Canadian part number(s) into the field and click on the Search button. If entering more than one five-digit part number, please separate by a comma. For example: 25224,25218,24010,27010