It is a tube form and a composite of a bleached, fine weave cotton reinforcement combined with an epoxy resin system. With properties similar to NEMA LE and MIL-I-24768/13, Type FBE, but using an epoxy resin instead of the proscribed phenolic resin, RTB326 is designed for electrical and mechanical applications that require fine machining. RTB326 is suitable for the manufacture of cams, gaskets, rings, collars, sleeves, timing wheels, hydraulic rings, light duty gears, and thrust washers and bearings.