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FPM - FKM – Fluoro rubber - Viton®
FPM (named DIN/ISO) or FKM (ASTM) is a material characterized by a good resistance to the high thermal and chemical products, but has limited resistance to cold.
Thermal operating range: -20°C to +200°C (with peaks at 250°C)
Hardness: 60 to 90 Shore A
Good resistance to:
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- oils and greases
- gas
- ozone and U-V
- hydrocarbons
- alphatic and aromatic solvents
- acids
Low resistance to:
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- alkalis
- brake fluids