ASTM D2000 Classification: KK
Temperature Range:
-26°C to +260°C (-15°F to +500°F).
Properties
The relative inertness of Fluorelastomers is provided by fluorine-carbon bonds on the elastomer backbone. The greater the fluorine content, the higher the resistance to chemical attack. Where fluorocarbon rubbers (FKM) have a fluorine content of 63% to 68 %, the Perfluorocarbons (FFKM) have a fluorine content of 73%. FFKM Perfluorelastomer have the best chemical resistance of all the elastomers, they have resistance to almost all chemicals, including inorganic acids, alkalines, ketones, esters, alcohols, fuels, and hot water and are used for applications in aggressive chemical environments with resistance to temperatures up to +326°C (+620°F).
| EMI Refeference | Specification | Hardness IRHD | Tensile Strength (Mpa) | Elongation at Break % | Colour |
|---|---|---|---|---|---|
| FFKM601 | General Use | 60° | 13 | 220 | Black |
| FFKM701 | General Use | 70° | 18.5 | 150 | Black |
| FFKM703 | FDA Compliant | 70° | 13.8 | 178 | White |
| FFKM751 | General Use | 75° | 19 | 150 | Black |
| FFKM754OF | High Chem Resist | 75° | 17.4 | 249 | Black |
| FFKM754HF | High Chem Resist | 75° | 21.6 | 135 | Black |
| FFKM801 | General Use | 80° | 21.6 | 135 | Black |
| FFKM803W | FDA Compliant | 80° | 17 | 125 | White |
| FFKM803B | FDA Compliant | 80° | 15 | 140 | Black |
| FFKM806 | High Temp | 80° | 16.5 | 130 | Black |
| FFKM901 | General Use | 90° | 18 | 120 | Black |
| FFKM904 | High Chem Resist | 90° | 20.1 | 118 | Black |
| FFKM801 | Hi Chem Low Temp | 90° | 13 | 114 | Black |
