It (NEMA FR-4) is a thermoset rolled and molded composite consisting of a medium-weave glass fabric reinforcement combined with a brominated epoxy resin system. RM130 complies with the requirements of MIL-I-24768/27, Type GEE-F. RM130 is designed for a variety of mechanical and electrical applications and is suitable for cams, dowels, inserts, bushings, rings, collars, sleeves, spacers, insulators, timing wheels, and light duty gears.