B.I.R.S. Machine & Supply Inc is a distributor of Mil-I-24768/16 FBM NEMA Grade C
NEMA grades C and CE Canvas Cotton-Cloth Reinforced Phenolic natural color is typically light tan to brown. C and CE grades are composed of a continuous cotton woven cloth impregnated with a phenolic resin binder. ( Phenolics are the oldest, best-known general purpose themoset resins. They are among the lowest in cost and easiest to process. Canvas Phenolics may be adequate for a fair percentage of electrical applications, but are not generally recommended for primary electrical insulation. Generally speaking, they are not equivalent to epoxies in resistance to moisture, humidity, dimensional stability, shrinkage, and retention of electrical properties in extreme environments). These grades contain a medium weave canvas and are known primarily for their mechanical properties. (Grade C certifies to Mil-I-24768/16 FBM; grade CE certifies to Mil-I-24768/14 FBG.)
Mil-I-24768/16 FBM NEMA Grade C is available in sheet, rod, tube and cut-to-size.