The Viton O-ring has outstanding resistance to a wide array of challenging conditions, including high temperatures, ozone, oxygen, mineral oil, synthetic hydraulic fluids, fuels, aromatics, and numerous organic solvents and chemicals. The gas permeability of Viton O-rings is remarkably low, comparable to that of butyl rubber. Additionally, specific FKM compounds within the Viton family offer enhanced resistance to acids and fuels, catering to diverse industrial requirements.
Viton O-Ring Properties :
| Item | Viton/fkm | Test Method |
| Color | Black | |
| Specific gravity | 1.75-2g/cm3 | ASTM D297 |
| Hardness | 70 +/- 5 Shore A | ASTM D2240 |
| Tensile strength | 7 MPa (min) | ASTM D412 |
| Elongation at break | 200% (min) | ASTM D412 |
| Size | Varies | |
| Compression set 200°C 22 hrs | Permanent set 25%(max) | ASTM D 395B |
| Tear strength | 25 N/mm (min) | ASTM D624 |
| Temperature range | -30°C to +250°C |
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