How to classify Teflon tape according to the degree of high...

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The density of the white solid is 2.2 g/ cm3.It has a melting point of 327 C, but it degrades above 260.

It is possible to measure the coefficient of friction against polished steel.Teflon's coefficient of friction is the lowest of any known solid material.It is the only surface that a gecko can't stick to, because of its resistance to van der Waals forces.

The dielectric properties of PTFE are excellent.It can be used as a material for printed circuit boards used at microwave frequencies and as an insulator in cables.It is a high-performance substitute for the weaker and lower melting point polyethylene that is used in low-cost applications because of its high melting temperature.It is an ideal material for making long life electrets that are similar to magnets.

PTFE can't be cross-linked like an elastomer because of its chemical inertness.It is subject to the "cold flow" and "compression set" because it has no memory.This can be either good or bad.PTFE seals conform better to mating surfaces than most other plastic seals.The seal is compromised by too much creep.Enhancing wear, friction, and other properties can be achieved with compounding fillers.Sometimes metal springs apply force to the seals to give them good contact.