Permatex Heavy-duty Rubberized Undercoating 454g



Permatex Heavy-duty Rubberized Undercoating 454g

Permatex Heavy Duty Rubberized Undercoating is specially
formulated to protect automotive underbodies from corrosion.
The product dries to a firm, flexible, tack-free film has good
abrasion resistance and effective sound-deadening properties.
Rubberized for maximum thickness, durability and flexibility.
  • Seals
  • Resists chipping
  • Insulates
  • Automotive frames and under-bodies
  • Rocker panels
  • Wheel wells
  • Rust holes
  • Gutters, roofs, drain systems
  • Driveway cracks
  • Post preserving

  1. Provide adequate ventilation.
  2. For best results, apply to clean, dry surfaces.
  3. Tap bottom of can to loosen the ball agitator. Shake can
    for 2 minutes. For best results, aerosol can should be at
    room temperature before spraying.
  4. Apply a uniform coating holding the can 10 to 12 inches
    from the surface to be coated.
  5. Multiple coatings are effective. Allow 15 to 20 minutes
    between coats. Recommend a minimum of 2 coats.

Note: Avoid spraying product on exhaust system.
This product is NOT considered paintable.
For Cleanup

  1. Turn can upside-down and spray to clear nozzle.
  2. Excess material can be removed with mineral sprits.
  3. Clean hands with Permatex brand hand cleaners.


This product is not recommended for use in pure oxygen
and/or oxygen rich systems and should not be selected as
a sealant for chlorine or other strong oxidizing materials.
For safe handling information on this product, consult the
Material Safety Data Sheet, (MSDS).

Products shall be ideally stored in a cool, dry location in
unopened containers at a temperature between 8 to 28C
(46 to 82F) unless otherwise labeled. Optimal storage is at the
lower half of this temperature range.
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