Since 1947, APM HEXSEAL has specialized in the design and manufacture of molded elastomeric rubber seals for environmental protection of electrical controls for industrial, marine, medical, consumer, and military applications. Most seals, including self-sealing and self-locking fasteners, are UL and CSA-recognized and designed to meet military specifications. Millions have been sold worldwide either direct or through stocking distributors. And, our Custom Molding Department can design unique prototype solutions for dynamic seals.