A4 Engineers manufactures custom rubber gaskets and seals utilizing a variety of production and material options to solve even the most challenging sealing applications. Our production capabilities include die cutting, molding, extruding, splicing, and hand fabrication. In many cases, several production methods may be required to produce the right gasket for the application. We manufacture rubber gaskets and seals from both solid and sponge materials and a variety of compounds including Neoprene, EPDM, Nitrile, Butyl, Viton and Silicone. We offer standard commercial grade materials and Specification Grade Materials to meet ISO Specifications. Custom compounded and color matched materials are also available.