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| Article number | 181656 |
| Alternative names | FFPM – Dupont Kalrez |
| Dimensions | 278x3.5 |
| Equal to | Dupont Kalrez 6230, Greene Tweed Chemraz SD625 |
| Material | FFKM - FFPM |
| Product name | O-ring 278x3.5 FFKM - FFPM |
| Seal type | O-ring |
| Alternative Size | |
| DIN 3771 Size Chart Explanation | 278x3.5 |
| ISO 3601 Size Chart | 278 x 3.5 |
| Size in text | two hundred and seventy eight zero by three comma fifty |
| SMS 1586 Size chart | 278 x 3.5 |
| Basic Specifications | |
| Approval | FDA - USP Class VI - 3A Sanitary |
| Color | Black |
| CS (Cross Section) Explanation | 3.5 mm |
| Hardness Explanation | 75 Shore A |
| ID (Inner diameter) Explanation | 278 mm |
| Equivalent to | |
| Dupont Kalrez® Equivalent | Dupont Kalrez 6230 |
| Freudenberg Simriz® Equivalent | Not Known |
| Greene Tweed Chemraz® Equivalent | Greene Tweed Chemraz SD625 |
| Parker Parafluor® Equivalent | Not Known |
| Precision Polymer Engineering Perlast® Equivilent | Not Known |
| Trelleborg Isolast® Equivalent | Not Known |
| Export Specifications | |
| Country of Origin | IT |
| Customs Code Explanation | 40169300 |
| Other Specifications | |
| Chemical Name | Perfluoroelastomer |
| Description 2 | O-ring FFKM - FFPM 278x3.5 |
| Trade names | Kalrez® - Simriz® - Chemraz® - Spectrum® - Triazinico® - Isolast® - Parofluor® - Fluorez® - Perlast® - Perfluor® |
| Technical Specifications | |
| Compression Set Explanation | 32 % |
| Specific Gravity Explanation | 2,00 (+/- 0,03) g/cm3 |
| Temperature Max | 270 ºC |
| Temperature Min | -20 ºC |
| Tensile Strength Explanation | 20 MPa |
| Ultimate Elongation Explanation | 190 % |
| attachment |  Material Datasheet |
This FFKM - FFPM O-Ring is 278x3.5mm and in the color Black. The Hardness of this O-ring 278x3.5 - FFKM - FFPM - FDA - USP Class VI - Kalrez 6230 - 75 Shore A - Black - ORS181656 (Equivalent) is 75 Shore A.The alternative names of the compound are FFPM – Dupont Kalrez and they are mostly produced by Kalrez® - Simriz® - Chemraz® - Spectrum® - Triazinico® - Isolast® - Parofluor® - Fluorez® - Perlast® - Perfluor®. The O-ring is commonly used in and has an operating temperature range from -20 ºC to 270 ºC. O-rings 614494 are indicated as 181656 and have a DIN 3771 Size of 278x3.5. This item is equal to Dupont Kalrez 6230, Greene Tweed Chemraz SD625 and has an FDA - USP Class VI - 3A Sanitary Approval. The chemical name of this Oring is Perfluoroelastomer.
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