1.1 ,This specification covers unsintered extruded films or tapes manufactured from virgin, unpigmented polytetrafluoroethylene, in nominal thickness from 0.025 to 0.51 mm (0.001 to 0.020 in.), which are ≥,99 ,% PTFE in composition.
Note 1: ,For unsintered pigmented products, refer to Specification D7193.