J-B Weld WaterWeld Epoxy 2oz

The J-B Weld WaterWeld (Net Wt. 2 oz / 57g) is an elite architectural and marine-grade epoxy putty engineered to deliver the “World’s Strongest Bond” in high-moisture environments. This professional-use formula addresses the critical need for a permanent, structural repair solution that can be applied directly to wet surfaces or entirely submerged in water.

Constructed for maximum longevity, WaterWeld creates an integrated, off-white bond that is highly resilient to harsh mechanical and chemical stressors. Its technical design prioritizes environmental resistance, ensuring the cured putty remains unaffected by constant exposure to water, oil, gas, diesel, hydraulic fluids, and most household chemicals. With a tensile strength of 4370 PSI, it provides the industrial-tier quality required for long-term satisfaction in both residential plumbing and critical automotive or marine applications.

Key Benefits:

Permanent Structural Integrity: Formulated to create heavy-duty repairs that will not crack or fail, even when used on high-pressure metal or plastic pipes.
Versatile Chemical Resistance: Provides a robust, durable barrier that prevents leaks in fuel systems and hydraulic components.
Professional Grade Safety: Being NSF certified, it is a foundational component for repairing components that come into contact with drinking water.
Time-Saving Operation: Fast 25-minute set time and 1-hour cure time allow for rapid return-to-service of critical household systems.

Technical Specifications:

Brand: J-B Weld
Product: WaterWeld Epoxy Putty
Strength: 4370 PSI
Set Time: 25 Minutes
Full Cure Time: 1 Hour
Cure Color: Off White
Certifications: NSF Certified (Drinking Water Safe)
Net Weight: 2 oz (57g)

Perfect For:

Plumbing & Sanitary: Permanent repair of leaking tubs, showers, drains, and household PVC or metal pipes.
Marine & Automotive: Sealing holes in boat hulls, fuel tanks, and hydraulic systems.
Potable Water Systems: Structural repairs for drinking water storage tanks and supply lines.

Application Instructions:

Ensure the repair area is free from large debris; however, the surface can remain wet.
Cut off the required amount of putty from the tube.
Knead the putty thoroughly with your fingers until it achieves a uniform color, indicating the catalyst and resin are fully mixed.
Firmly press the mixed putty into the leak, hole, or crack, ensuring full contact with the edges of the repair area.
Allow to sit undisturbed for 25 minutes to set; the repair will be fully cured and ready for use in 1 hour.

Pro Tips:

Surface Prep: For the strongest mechanical “bite,” lightly sand smooth surfaces like PVC or brass before applying the putty.
Uniform Mixing: Ensure no streaks of color remain in the putty; a completely uniform off-white color is essential for achieving the rated 4370 PSI strength.
Underwater Use: When applying submerged, hold the putty in place for a few extra seconds to ensure the initial bond to the substrate is secure.

Keywords: J-B Weld WaterWeld, underwater epoxy putty, plumbing repair epoxy, drinking water safe sealant, fuel tank repair, 4370 PSI epoxy, marine grade putty, hardwarett.com.