item | PTFE | low proportion GF filled PTFE | medium proportion GF filled PTFE | High proportion GF filled PTFE |
colour | milky white | Beige | Beige | Beige |
density g/cm3 | 2.18 | 2.22 | 2.25 | 2.28 |
shore hardness D | 63 | 65 | 67 | 70 |
tensile strength MPa | 27.83 | 23.51 | 20.60 | 15.56 |
elongation at break % | 365 | 270 | 258 | 200 |
friction coefficient | 0.16 | 0.19 | 0.22 | 0.23 |
Wear loss g | 0.2658 | 0.0480 | 0.0244 | 0.0021 |