JB Weld Epoxy Putties & Putty

JB Weld Epoxy Putties: Engineered for Real-World Repairs

When a leak, crack, or broken component demands a fast, lasting fix, J-B Weld epoxy putties are a go-to solution for mechanics, fabricators, and DIYers alike. Unlike two-part liquid epoxies that require careful measuring and mixing cups, J-B Weld's epoxy putty sticks deliver a two-component formula in a single, convenient stick format — just cut, knead by hand until the color is uniform, and apply. The chemistry does the rest.

What sets J-B Weld apart in this category is the breadth of purpose-built formulations, each engineered for a specific repair challenge. Rather than offering a one-size-fits-all putty, J-B Weld has developed distinct product lines tuned for metal, plastic, extreme heat, and even underwater applications.

Key JB Weld Epoxy Putty Product Lines

• SteelStik — A hand-mixable, steel-reinforced, non-rusting epoxy putty that quickly repairs or rebuilds anything made of metal. After mixing, it forms an industrial-strength polymer compound that can be molded into shapes or used to build up, patch, and repair steel components. SteelStik sets in 5 minutes and after 60 minutes can be drilled, tapped, machined, ground, filed, and painted. It cures to a dark grey color and is rated at a strength of 4,000 PSI, withstanding temperatures up to 350°F. It is also chemical resistant against petroleum, hydraulic fluids, and other harsh chemicals when fully cured. Compatible surfaces include iron & stainless steel, copper & brass, aluminum & bronze, fiberglass, and plastic & PVC.
• WaterWeld — J-B Weld WaterWeld will plug or seal leaks and patch holes and cracks in almost anything, and is ideal for repairing plumbing, fuel tanks, tubs and showers, drains, pools and spas, boats, and potable water tanks — and setup occurs even underwater. WaterWeld has a set time of 25 minutes and sets hard in one hour, curing to an off-white color with a rated strength of 4,370 PSI — able to withstand water pressure up to 500 PSI and temperatures up to 250°F.
• HighHeat — HighHeat is a hand-mixable epoxy putty stick specifically formulated to bond and repair materials exposed to high temperatures in automotive and industrial maintenance applications. It cures to a tough, hard bond with little to no shrinkage, and outperforms conventional epoxy putties at high temperatures. Rated at a tensile strength of 4,000 PSI, HighHeat can withstand continuous heat exposure of 450°F and intermittent heat exposure up to 500°F.
• PlasticWeld — PlasticWeld is a hand-mixable, fast-setting epoxy putty that forms a durable bond to most major plastic types, forming a polymer compound that can be molded or used to build up and repair just about anything made from plastic. When cured, it can be sawed, drilled, carved, sanded, and painted. PlasticWeld has a 20–25 minute work life with a functional cure in 2–3 hours, and is rated at a tensile strength of 700 PSI.

Why Choose JB Weld Epoxy Putty?

The hand-kneading activation method is a key advantage across all J-B Weld putty lines. J-B Weld's epoxy putty sticks put strength and versatility right in your hands — simply mix the putty until the two components are uniform in color, then mold, shape, or fill into a crack, gap, or hole. Once cured, the putty can be sanded, drilled, tapped, and painted. This no-mess, no-measuring approach makes J-B Weld putties well suited for field repairs, roadside emergencies, and workshop use alike. SteelStik is also NSF Certified and safe for contact with potable water, making it appropriate for plumbing and water-system repairs. Whether you're sealing a cracked exhaust manifold, patching a marine fuel tank, or rebuilding a stripped plastic housing, J-B Weld's lineup of epoxy putties offers a targeted solution for virtually every material and environment.