J-B Weld Water Weld Epoxy Putty Stick - 2 oz. White
J-B Weld Water Weld Epoxy Putty Stick - 2 oz. White
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J-B Weld Water Weld Epoxy Putty Stick - 2 oz. White

Key item features

  • Versatile Applications: Great for plumbing & irrigation, marine & boats, tubs, showers & drains, and potable water tanks.
  • Material Compatibility: Works best on rigid plastics and fiberglass; also suitable for all metals, stone, and concrete.
  • High Pressure Resistance: Holds up to 10 times typical household water pressure, ensuring durability.
  • Easy to Use: Hand-mixable epoxy putty that molds to fit and shape anywhere, sealing and filling cracks and holes.
  • Quick Setting: Sets in 15-25 minutes and fully cures in one hour, providing fast and efficient repairs.
  • Strong Bond: Forms a permanent bond with most clean and dry surfaces, even underwater with consistent pressure.
  • Post-Cure Workability: Once cured, it can be drilled, tapped, filed, and sanded, withstanding 4370 PSI tensile force and 500 PSI water pressure.
  • Temperature Resistant: Withstands temperatures up to 250°F, making it suitable for various environments.
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Customer ratings & reviews

4.3 out of 5 stars
stars
670 ratings451 reviews
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Reviews summary

Pros

  • : Simple to apply and mix with clear instructions.
  • : Forms a reliable seal that lasts.
  • : Requires minimal effort in the mixing process.
  • : Sets in 15-30 minutes, even in water.
  • : Forms seals in various materials effectively.

Neutral

  • : Can be effective, but inconsistent in results.
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Showing 1-3 of 451 reviews

Mar 1, 2026
Gregg
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Works Exactly Like It Says!

I used this to plug a dime-size hole in a plastic drain pipe. Let dry overnight just to be sure. Not a drop of water has leaked out since using this product three months ago. Just be sure to follow the directions carefully. I am a believer!

Helpful?11SI7HUJPU2D16627432
Feb 20, 2026
David
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Fixed my instantaneous water heat w/ this product

I have a $1200 instantaneous water heat that was fairly new and a PVC portion of the feedwater pipe inside the unit broke in freezing temperatures. The part was not replaceable and I didn't want to throw away a brand new water heater. I used JB weld on the interior fitting and JB PipeWeld on the exterior, and it works great--no leaks. Going on 1 month now with no problems.

Helpful?11SI7HUJPU2D16627432
May 31, 2026
Walmart customer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Fast bond, truly waterproof and aluminum friendly

Tiny miracle, I used this to create a condensate catch pan under my air conditioner. I made the pan but needed a way to seal and permanently join the corners where the side meet up. This was simple to cut a small piece, kneed the material for a few seconds then press into the joint. After holding place for about 30 seconds it held strong. I let it sit over night and then tested water tightness, it worked flawlessly.

Helpful?11SI7HUJPU2D16627432