J-B Weld WaterWeld

JB Weld WaterWeld Epoxy Putty Stick – 57g
Permanent Waterproof Repairs – Even Underwater
Take on leaks, cracks, and emergency repairs with confidence using JB Weld WaterWeld, the specially formulated epoxy putty designed to cure in wet conditions and even set underwater. Ideal for plumbing, marine, automotive, and household repairs, WaterWeld provides a durable, long-lasting bond that resists water, chemicals, fuels, and hydraulic fluids.
This hand-mixable epoxy putty is easy to apply and can be moulded, shaped, sealed, or rebuilt directly onto damaged surfaces. Once cured, it can be drilled, tapped, sanded, filed, and painted for a professional-quality repair.
With a remarkable bond strength of 4,370 PSI, WaterWeld delivers reliable performance where traditional adhesives may fail.
Key Features
Specially formulated to set and cure underwater
High-strength epoxy putty with 4,370 PSI bond strength
Easy hand-mix application
Sets in approximately 25 minutes
Fully cures in 1 hour
Waterproof and chemical resistant
Off-white cured finish
Can be drilled, sanded, tapped, filed, and painted once cured
NSF Certified – Safe for contact with drinking water after curing
Suitable For Use On
Fibreglass
PVC Plastic
Copper
Brass
Iron
Aluminium
Various metal and composite surfaces
Ideal Applications
Plumbing repairs
Leaking pipes and fittings
Baths, showers and drain repairs
Potable water tanks
Fuel tanks
Marine and boat repairs
Irrigation systems
Emergency household repairs
Resistant To
Water
Oil
Petrol and diesel fuels
Hydraulic fluids
Most common chemicals
Corrosion and moisture exposure
Product Specifications
Brand: JB Weld
Product: WaterWeld Epoxy Putty Stick
Pack Size: 57g (2oz)
Strength: 4,370 PSI
Set Time: 25 Minutes
Cure Time: 1 Hour
Cured Colour: Off White
Certification: NSF Drinking Water Safe
Made In: USA
Why Choose JB Weld WaterWeld?
Whether you're repairing a leaking pipe, sealing a water tank, fixing a boat, or carrying out emergency maintenance, WaterWeld offers a fast, dependable, and waterproof solution. Designed to perform in challenging wet environments, it's an essential addition to any toolbox, workshop, maintenance vehicle, or marine repair kit.