J-B WELD WATERWELD EPOXY
J-B WELD
J-B Weld WaterWeld Epoxy Stick
J-B WELD WATERWELD EPOXY
J-B WELD
J-B Weld WaterWeld Epoxy Stick
JD Industrial Supply

J-B Weld WaterWeld 7" Epoxy Stick

SKU: 8278U
(0)
$7.49
In stock
Usually ships within 24 hours
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WaterWeld Epoxy Putty, 7" Length, 4oz Stick

J-B Weld WaterWeld is a waterproof epoxy putty designed to plug leaks, seal cracks, and patch holes in a wide range of materials—even when fully submerged. It sets in 25 minutes and cures hard in one hour, making it one of the fastest, most reliable repair solutions available for both wet and dry applications.

Key Benefits

  • Cures even underwater – Make repairs on wet or submerged surfaces without stopping the flow first.
  • Fast set time – Sets in 15–25 minutes and hardens in one hour, so you can get back to work quickly.
  • Strong, lasting bond – Rated at 4,370 PSI for repairs built to hold under pressure.
  • Handles real-world conditions – Withstands water pressure up to 500 PSI and temperatures up to 250°F.
  • Fully workable after curing – Drill, tap, file, sand, and paint it to match your finished repair.
  • Clean, neutral finish – Cures to an off-white color that blends into most surfaces.

Product Specifications

Specification

Detail

Set Time

25 minutes

Cure Time

1 hour

Cure Color

Off-white

Tensile Strength

1,300 PSI


WaterWeld is ideal for emergency and permanent repairs across a broad range of surfaces and environments. Recommended applications include:

  • Plumbing pipes and fittings – Stop active leaks without draining the system
  • Fuel tanks – Seal cracks and pinholes safely and securely
  • Tubs, showers, and drains – Restore watertight seals in bathroom fixtures
  • Pools and spas – Patch cracks underwater without draining
  • Boats and marine equipment – Repair hull damage and fittings at the waterline

  • Potable water tanks – Safe for use in drinking water applications

Key Performance Features

  • Underwater application – Adheres and cures even when fully submerged
  • High-strength bond – Rated at 1,300 PSI for durable, long-lasting repairs
  • Heat resistant – Withstands temperatures up to 250°F
  • Machinable after cure – Can be drilled, tapped, filed, sanded, and painted
  • Fast set time – Ready to work with in as little as 25 minutes

Articles: 

Fix Leaks Fast with J-B Weld WaterWeld Epoxy Putty

Safety Data Sheet

 

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