An unusually reliable non-sticking PTFE tape for use at high temperature slot-liner (upto 300C) the tape offers the best possible overall electrical characteristics with complete freedom from ageing. The range of thickness is from 0.075 mm to 0.4mm. in comparison to the unsintered PTFE tape (which is the best available sealant for threaded joints and fitting) it is about 5 to 10 times stronger mechanically. It is density is about 2.1 Compared to 1.45 for unsintered/ non- cured tapes.