Filled PTFE Seal
Application:
Rod and Piston Seal, kinds of gasket.
Material: graphite filled PTFE, Glass Fiber filled PTFE, Carbon filled PTFE, Brass filled PTFE.
Size: Those seals are special products, can be produced by drawing or samples.
Filled PTFE Technical Data
| Item | Standard | Unit | 100% PTFE | 15% Glass Fiber | 15% Graphite | 25% Carbon | 25% Carbon Graphite | 60% Brass 2% Carbon |
| Moded Products | ||||||||
| Density | ASTMD792 | g/cm3 | 2.14-2.18 | 2.19-2.22 | 2.10-2.15 | 2.05-2.11 | 2.05-2.11 | 3.80-3.90 |
| Tensile strength | ASTMD4894 ASTMD4745 | N/mm2 | ≥24 | 17-24 | 15-20 | 15-20 | 14-18 | 17-23 |
| Elongation at break | ASTMD4894 ASTMD4745 | % | ≥250 | 250-300 | 170-250 | 150-200 | 70-120 | 100-160 |
| Friction Factor | ASTMD1894 | / | 0.06 | 0.12 | 0.07 | 0.13 | 0.11 | 0.13 |
| Hardness Shore | ASTMD2240 | points | ≥58 | 60-65 | 55-60 | 60-65 | 62-67 | 65-70 |
| CTE | ASTMD696 | 1/℃ 10 -5 | 12--13 | 11--13 | 12--13 | 12--13 | 10--12 | 8--9 |
| Extruded Products | ||||||||
| Specific Gravity | ASTMD792 | g/cm3 | 2.14-2.18 | 2.18-2.21 | 2.09-2.14 | 2.04-2.10 | 3.04-2.10 | 3.80-3.88 |
| Tensile strength | ASTMD4894 | N/mm2 | ≥20 | ≥15 | ≥14 | ≥14 | ≥12 | ≥13 |
| Elongation at break | ASTMD4745 | % | ≥200 | ≥200 | ≥70 | ≥100 | ≥50 | ≥80 |
| Hardness Shore | ASTMD2240 | points | 51-60 | 60-65 | 55-60 | 60-65 | 62-67 | 65-70 |
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