● Adhesives · Review

Permatex 84109 PermaPoxy 4-Minute Multi-Metal and Plastic

Permatex PermaPoxy 4-Minute is a fast-setting two-part epoxy for metal and plastic repairs.

✎ PickHonest Research Desk▦ Updated October 15, 2026◷ 3 min read

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Best Fast Waterproof

Permatex 84109 PermaPoxy 4-Minute Multi-Metal and Plastic

Permatex

Permatex PermaPoxy 4-Minute is a fast-setting two-part epoxy for metal and plastic repairs.

  • 4-minute cure
  • Waterproof
  • Plastic and metal

Pros

  • Fast 4-minute set
  • Bonds metal and many plastics
  • Waterproof once cured
  • Fills gaps

Cons

  • Short working time
  • Needs mixing
  • Not for polyethylene or polypropylene
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