It is a tube form composed of a medium fine weave cotton fabric reinforcement combined with a phenolic resin system. RT342 complies with the requirements of MIL-I-24768/16, Type FBM, and is designed for low voltage electrical and mechanical applications that require better machining than RT310. RT342 is suitable for cams, gaskets, flanges, rings, collars, sleeves, pillow blocks, brake lining, timing wheels, light duty gears, journal and other bearing applications, and thrust washers.