Pierce-Roberts Rubber Co.

Pierce-Roberts Rubber Company was contracted to develop a prototype of this featured grommet, designed for use within the fuel filter of a diesel engine application. We relied on an Objet 3D printer to develop 8 different prototypes. Each prototype was then subjected to form and fit testing. During rapid prototyping, we held tolerances down to +- .005 of an inch. The grommet prototype measured 1.244 inches in outside diameter, .725 of an inch in inside diameter, and .485 of an inch thick. The final component was manufactured from Buna.

When Pierce-Roberts Rubber Company was contracted by a client in the automotive industry to custom manufacture this Nitrile bumper for a Twin Otter aircraft application, we rose to the challenge. Adhering to specifications laid out in a client-supplied 3D Solidworks drawing, we designed and manufactured the necessary mold. We then manufactured three metal rings, an inner, outer, and middle ring, which were then transfer molded into the rubber. We worked with Nitrile and 4130 aircraft-quality steel, conducting several in-process and destructive tests, to ensure the middle ring was properly suspended inside the rubber. The entire process was designed to be constantly repeated while achieving the same high level of quality.

Considered to be the best in the industry, these custom molded MX41-AR ear cushions are manufactured using a hand-drawn design developed by Pierce-Roberts Rubber Company over 40 years ago. Beginning with this drawing and a customer-supplied 2D CAD drawing, and following strict OSHA standards, we first design and manufacture the appropriate mold. Next, we compression mold the ear cushions, and then bond the neoprene sponge to solid neoprene rubber, using water-based rubber glue. Available in black, blue, red, our ear cushions are tested by independent labs and visually inspected 100 percent at every stage of manufacturing.