Profile: Auster Rubber Co. manufactures snow plow blades, fittings, adhesives, laminates, foam fabrication converters, expansion joints and bumpers. We offer die cutting and molding extruding services. Our fittings include nipples, couplings, valves, clamps, cam & groove, shank type and air hose. Couplings are available in several styles with shank ends that insert in hose.