About this item

J-B WELD WATERWELD: A hand mixable two part epoxy putty stick, that can cure under water and is ideal for repairing plumbing, fuel tanks, tubs and showers, drains, pool and spa, boats & potable water tanks and more! J-B Weld WaterWeld is certified by the NSF and is safe for contact with potable water.
CURE AND SET TIME: After kneading the two part formula together by hand, WaterWeld takes 25 minutes to set and cures in 1 hour. J-B Weld WaterWeld set and cure color is off white.
PRODUCT FEATURES AND STRENGTH: J-B Weld WaterWeld has lap shear strength of 1300 PSI, can withstand continuous temperatures up to 300F (149C) and intermittent temperatures of 350F (176 degrees Celsius) and is chemical resistant against petroleum, hydraulic fluids and other chemicals when fully cured.
SURFACE APPLICATIONS: Iron & Stainless Steel, Copper & Brass, Aluminum & Bronze, Fiberglass and Plastic & PVC.
DO IT YOURSELF: Big or small, you can DIY it with J-B Weld. Our heavy duty epoxy and adhesives repair & restore it right the first time. J-B Weld delivers superior performance, quality, and results for the World’s Strongest Bond.

Quick Comparison Table

Type	What It Is	Hardens?	Used On	Not For	Typical Examples
Metal Putty	Two‑part epoxy that cures like metal	✔ Yes, very hard	Metal repair, filling, sealing	Plumbing seals, soft materials	J‑B Weld, Epoxy Putty Sticks
Plumber’s Putty	Soft, oil‑based sealing compound	✘ No, stays soft	Sink drains, faucets, strainers	Metal repair, pressure lines	Black Swan Stay‑Soft Putty
Wood Putty	Solvent‑based filler for finished wood	Semi‑hard	Nail holes, dents in stained wood	Raw wood, structural repair	Minwax Wood Putty
Spackling	Gypsum‑based wall filler	✔ Yes, sands smooth	Drywall holes, dents	Wet areas, structural repair	DAP Spackling

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