This British Standard specifies requirements for unsintered
polytetrafluoroethylene (PTFE) tapes with a mass per unit area
within the range 25 g/m2 to 300 g/m2 and with a thickness in the
range 0.05 mm to 0.25 mm.
It specifies requirements for three grades of unsintered PTFE tape,
for general or special engineering applications at temperatures
between –270 °C and +260 °C. All grades of this tape are suitable for
use with most common liquids and gases and in an oxygen-enriched
environment.
In addition to the definitive requirements, this standard also requires
the items detailed in Clause 3 to be documented. For compliance with
this standard, both the definitive requirements and the documented
items have to be satisfied.