1.1 This specification is intended to be a means of calling out plastic product used in the fabrication of end items or parts. 1.2 This specification covers requirements and test methods for the material, dimensions, and This specification covers the requirements for extruded- and compression-molded rod and heavy-walled tubing made from polytetrafluoroethylene (PTFE). Material covered by this specification is classified according to type (unfilled PTFE or oth