Permatex 80335 Muffler & Tailpipe Sealer, 3 Oz

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For exhaust repair, seals holes and leaks in mufflers, tailpipes and around joints, makes new installations more secure, resists temperatures to 2000F (1000C).
SKU: 40305720
MFG: 80335
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Seals holes and leaks in mufflers, tailpipes and around joints. Makes new installations more secure. Resists temperatures to 2000°F (1000°C). Permatex Muffler & Tailpipe Sealer is a specially formulated, thick, non-slumping paste type repair material.


  • Size: 3 Oz
  • Repairs leaks
  • Temperature resistant
  • Catalytic converter safe
  • Carded


  • Waterproof
  • Non-shrinking
  • Spreads easily
  • Resists temperatures to 2000 °F


  • Mufflers
  • Tailpipes
  • Catalytic converters

Typical Curing Performance:

Permatex Muffler & Tailpipe Sealer cures by the evaporation of water and further cures with heat. Full cure will be affected after 24 hours of drying and driving at the maximum operating temperature.

Chemical/Solvent Resistance:

The fully cured product retains effective properties when in contact with water.

General Information:

This product is not recommended for use in pure oxygen and/or oxygen rich systems and should not be selected for use with chlorine or other strong oxidizing materials.

Properties Of Uncured Material:

  • Chemical Type: Sodium silicate
  • Appearance: Grey paste
  • Odor: No odor
  • Specific Gravity: 1.6
  • Viscosity: Medium heavy paste
  • Flash Point: None


MFR: 80335
SKU: 40305720
UPC: 686226803351
Brand: Permatex
Attachments: MSDS Sheets,