Virgin PolyTetraFluoroEthylene (PTFE) is a non-melt processible fluoropolymer resin. Virgin PTFE materials have the highest wear rate and lowest coefficients of friction. The aerospace industry, according to AMS3678, uses virgin PTFE for backup rings and seal components with light dynamic, and static applications.
Virgin PTFE materials can be used to seal against steel, stainless steel, chromium plating, bronze, bare or anodized aluminum and aluminum alloys, and ceramic coatings.
PBY Material Codes:
PB10000F - Virgin PTFE Premium Grade
PB10003I - Virgin PTFE Commercial Grade
Premium Grade meets ASTM D4894 Type II and AMS3678/1A requirements. This product is USP Class VI compliant.
Commercial Grade meets AMS3678/1B requirements.
| Property | Test Method | Units | Premium Grade | Commercial Grade |
|---|---|---|---|---|
| Color | - | - | White | White |
| Specific Gravity | ASTM D792 | - | 2.150 - 2.190 | 2.130 - 2.190 |
| Hardness Shore D | ASTM D2240 | - | 56 - 66 | 54 - 64 |
| Tensile Strength, min. | ASTM D4894 | PSI [MPa] | 4,000 [27.6] | 3,000 [20.7] |
| Elongation at Break, min. | ASTM D4894 | % | 300 | 200 |
| Service Temperature High | - | °F [°C] | 500 [260] | 500 [260] |
| Service Temperature Low | - | °F [°C] | -436 [-260] | -436 [-260] |
| Second Melt Peak Temp. | ASTM D3418 | °F [°C] | 621 [327] | 621 [327] |
| Glass Transition Temp. | ASTM D3418 | °F [°C] | -143 [-97]; 246 [119] | -143 [-97]; 246 [119] |
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