本规范涵盖了成型棒、管和形状形式的原始、未填充的聚四氟乙烯(PTFE)。本说明书不适用于平行于所施加的模制压力方向的尺寸超过12英寸(305mm)的产品、直径低于0.750英寸(19.05 mm)的棒以及壁厚低于0.500英寸(12.70 mm)的管。

This specification covers virgin, unfilled polytetrafluoroethylene (PTFE) in the form of molded rods, tubes, and shapes. This specification does not apply to product over 12 inches (305 mm) in dimension parallel to the direction of applied molding pressure, rods under 0.750 inch (19.05 mm) in diameter, and tubes having wall thickness under 0.500 inch (12.70 mm).