MIL-P-22296B, MILITARY SPECIFICATION: PLASTIC TUBES AND TUBING, POLYTETRAFLUOROETHYLENE, (TFEFLUOROCARBON RESIN), HEAVY WALLED (02 NOV 1973) [S/S BY ASTM-D1710]., This specification covers unfilled, unpigmented, heavy walled polytetrafluoroethylene (TFE-fluorocarbon resin) tubes and tubing. It does not cover tubes primarily used for fluid handling.