Sudbury Elastomeric 3 oz (89ml) Sealant Tube - White

The Sudbury Elastomeric 3 oz (89ml) Sealant Tube in white is a marine-grade, one-part polyurethane sealant engineered for the demanding demands of boat maintenance, repair, and construction. Whether you're sealing deck seams, repairing hull cracks, bonding hardware, or protecting against water intrusion, this elastomeric formula delivers the waterproof reliability that serious boaters and marine professionals depend on year after year. Fast-skinning and fast-curing properties mean you can get back on the water without lengthy downtime.

This sealant achieves initial tack in just 10 minutes and full cure within 24 hours, even in challenging cold-water environments where temperature ranges from -20°F to 120°F. The elastomeric formulation provides superior strength, adhesion, and elongation—critical qualities when sealing joints that flex with hull movement, vibration, and thermal cycling. Its multi-purpose design bonds to fiberglass, wood, aluminum, stainless steel, and vinyl, making it the go-to choice for transom repairs, through-hull fittings, console installation, and cosmetic finishing on both above-deck and below-waterline applications.

Anglers, cruisers, and commercial boat operators rely on Sudbury sealants because they resist UV degradation, remain flexible under stress, and maintain their waterproof seal over years of saltwater and freshwater exposure. The 3 oz tube size is ideal for spot repairs, deck maintenance, and smaller sealing jobs where waste is a concern. Always prepare surfaces by cleaning and drying thoroughly—a few minutes of surface prep ensures maximum adhesion and long-term performance that keeps your vessel watertight and mission-ready.