FFKM O-ring KALREZ® 6221
Technical data
| Material | FFKM |
|---|---|
| Compound designation Angst+Pfister | KALREZ® 6221 |
| Hardness | 70 ±5 Shore A |
| Working temperature range | from -18 to +260 °C |
| Color | white |
| Medium stability | against almost all chemicals |
| Conformity/Approval | 3-A Sanitary Standard, EC 1935/2004 article 3, FDA, USP Class VI |
| Norm | Dimensions according to American standard AS 568 A and British standard BS 1806 |
| UNSPSC Code | UNSPSC-31410000 |
| On request |
|---|
| further dimensions |
| Note |
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| 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. |
283 articles
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General product information
Kalrez® 6221 mainly used in life sciences and pharma industries is a perfluoroelastomer which is compliant with the United States’ Food and Drug Administration’s regulations for repeated use in contact with food as described by 21 CFR177.2600 and Food Contact Notification 000101. Kalrez® parts made from compound 6221 have been tested in accordance with the United States Pharmacopoeia Class VI (USP Class VI) testing protocol and meet the test requirements of a USP Class VI polymer.
This is a white product that offers excellent steam cycling resistance and reduces extractables from sealing materials to trace levels. The maximal service temperature for Kalrez® 6221 is up to 260°C.