FFKM O-ring KALREZ® 4079
Technical data
| Material | FFKM |
|---|---|
| Compound designation Angst+Pfister | KALREZ® 4079 |
| Hardness | 75 ±5 Shore A |
| Working temperature range | from -18 to +315 °C |
| Max. operating temperature short term | +350 °C |
| Color | black |
| Medium stability | against almost all chemicals |
| Norm | Dimensions according to American standard AS 568 A and British standard BS 1806 |
| UNSPSC Code | UNSPSC-31410000 |
| On request |
|---|
| further dimensions |
| Note |
|---|
| Kalrez® is a DuPont™ brand. DuPont™, the DuPont Oval Logo, and all trademarks and service marks denoted with ™ or ® are owned by affiliates of DuPont de Nemours, Inc. |
| Packaging and delivery information |
|---|
| The O-rings are individually packaged and labelled; they are subject to a 100% tolerance and a surface inspection. |
351 articles
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General product information
Kalrez® 4079 perfluoroelastomer parts are a low compression set product for general purpose use in o-rings, diaphragms, seals and other parts used in the chemical process and aircraft industries.
It is a carbon black filled product with excellent chemical resistance, good mechanical properties, and outstanding hot air aging properties. It exhibits low swell in organic acids, inorganic acids and aldehydes, and has good response to temperature cycling effects. A maximum upper service temperature of 316°C is recommended, with short excursions to higher temperatures possible.
Kalrez® 4079 is not recommended for use in hot water/steam applications or in contact with certain hot aliphatic amines, ethylene oxide, or propylene oxide.