It is a tube form and a composite composed of a medium weave cotton reinforcement combined with a phenolic resin system. RT310 meets the requirements of MIL-I-24768/16, Type FBM. RT310 is designed for electrical and mechanical applications and is suitable for, gaskets, flanges, rings, collars, sleeves, pillow blocks, brake lining, timing wheels, light duty gears, journal and other bearing applications, and thrust washers. For increased dimensional stability, the grade is also offered in two heat treated versions, in an oven (H) or in oil (S), which improves the moisture resistance.