• Custom Lock & Dam Seals

• Vulcanized Rubber Components

• Compression Packing & Wiper Seals

• Structural Bearing & Urethane Materials

A4 Industrial specializes in seals and components for lock and dam systems, engineered to handle high pressure, water exposure, and environmental wear. Our lock and dam seals are custom-designed to perform dependably in critical waterway infrastructure applications.

With years of experience supplying elastomeric and urethane materials to public and private water management systems, we ensure consistent sealing integrity, long service life, and reduced maintenance costs. Each solution is crafted for maximum durability and exact fit in demanding operating conditions.