5%, 10%, 15% and 20% polyimide filled PTFE Teflon tube is the main types of PI filled PTFE compound. The material can be made into self-lubricating parts used for seals, and FDA approved.
The most important character of Polyimide filled PTFE tube is excellent
wear resistance at elevated temperature, higher elongation, and also no
abrasion of the sliding partner — all without making use of
lubrication. So it is a really good self-Lubricating material.
Polyimide as an active filler in PTFE
increases the mechanical character of the PTFE. Blending 5% to 20%
polyimide powder with PTFE makes the PTFE compound has better wear
resistant that increase the performance especially at higher stresses,
velocities and temps. Polyimide filled PTFE compounds are especially
great running against very soft mating surface areas.
Teflon® is a authorized brand of E.I. duPont de Nemours and Company
Properties | Test Methods | Typical Value | Test Unit |
Specific Gravity | ASTM D792 | 2.05 | g/cm3/> |
Hardness shore D | ASTM D2240 | 66 | shore D |
Tensile strength | ASTM D4745 | 19.2 | mpa |
Elongation at break 23°C | ASTM D4745 | 240 | % |
Operating temp | - | -269 to 312 |
°C |