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| Article number | 188645 |
| Color | Black |
| Alternative names | FFPM – Dupont Kalrez |
| Chemical Name | Perfluoroelastomer |
| Description 2 | O-ring FFKM - FFPM 253.5x3.53 |
| Equal to | Kalrez® 7090 - Evolast N9EX |
| Material | FFKM - FFPM |
| Packaging Unit | O-ring |
| Product name | O-ring 253.5x3.53 FFKM - FFPM |
| Size in text | two hundred and fifty three comma fifty by three comma fifty three |
| Trade names | Evolast® - Chemraz® - Simriz® - Kalrez® - Spectrum - Triazinico - Isolast® - Parofluor® - Fluorez - Perlast® - HPSealing® - Perfluor® - Polymax |
| Alternative Size | |
| AS568 Size Chart | AS 274 |
| DIN 3771 Size Chart | 253.5 x 3.53 |
| ISO 3601 Size Chart | 253.5x3.53 |
| SMS 1586 Size chart | 253.5x3.53 |
| Core Spec's | |
| Approval | None |
| CS (Cross Section) | 3.53 mm |
| Hardness | 90 Shore A |
| ID (inner diameter) | 253.5 mm |
| Temperature Max | 340 ºC |
| Temperature Min | -15 ºC |
| attachment |  Material Datasheet F909ZEX |
This FFKM - FFPM O-Ring is 253.5 x 3.53mm and in the color Black. The Hardness of this O-RIng 253.5x3.53 - FFKM - FFPM - 90 Shore A - Black - ORS188645 is 90 Shore A.The alternative names of the compound are FFPM – Dupont Kalrez and they are mostly produced by Evolast® - Chemraz® - Simriz® - Kalrez® - Spectrum - Triazinico - Isolast® - Parofluor® - Fluorez - Perlast® - HPSealing® - Perfluor® - Polymax. The O-ring is commonly used in and has an operating temperature range from -15 ºC to 340 ºC. O-rings 651757 are indicated as 188645 and have a DIN 3771 Size of 253.5 x 3.53. This item is equal to Kalrez® 7090 - Evolast N9EX and has an None Approval. The chemical name of this Oring is Perfluoroelastomer.
