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| Article number | 179977 |
| Approval | General Purpose (+330ºC) |
| Color | Black |
| Hardness Explanation | 75 Shore A |
| Material | FFKM - FFPM |
| Alternative names | FFPM – Dupont Kalrez |
| AS568 Size Chart Explanation | AS 378 |
| Chemical Name Explanation | Perfluoroelastomer |
| Compression Set Explanation | 19,5 % |
| Country of Origin | IT |
| CS (Cross Section) Explanation | 7 mm |
| Customs Code Explanation | 40169300 |
| Description 2 | O-ring FFKM - FFPM 265x7 |
| Dimensions Explanation | 265x7 |
| DIN 3771 Size Chart Explanation | 265 x 7 |
| Equal to | Dupont Kalrez 4079, Greene Tweed Chemraz 615 & Chemraz 551, PPE Perlast G75B, Trelleborg Isolast J8325 & Isolast J9876 |
| ID (Inner diameter) Explanation | 265 mm |
| Product name | O-ring 265x7 FFKM - FFPM |
| Seal type | O-ring |
| Size in text | two hundred and sixty five zero by seven zero |
| SMS 1586 Size chart | 265x7 |
| Specific Gravity Explanation | 1,98 (+/- 0.03) g/cm3 |
| Temperature Max Explanation | 330 ºC |
| Temperature Min Explanation | -15 ºC |
| Tensile Strength Explanation | 17,8 MPa |
| Trade names | Kalrez® - Simriz® - Chemraz® - Spectrum® - Triazinico® - Isolast® - Parofluor® - Fluorez® - Perlast® - Perfluor® |
| Ultimate Elongation Explanation | 152 % |
| Equivalent to | |
| Dupont Kalrez® Equivalent | Dupont Kalrez 4079 |
| Freudenberg Simriz® Equivalent | Not Known |
| Greene Tweed Chemraz® Equivalent | Greene Tweed Chemraz 615 & Chemraz 551 |
| Parker Parafluor® Equivalent | Not Known |
| Precision Polymer Engineering Perlast® Equivilent | PPE Perlast G75B |
| Trelleborg Isolast® Equivalent | Trelleborg Isolast J8325 & Isolast J9876 |
| attachment |  Material Datasheet |
This FFKM - FFPM O-Ring is 265 x 7mm and in the color Black. The Hardness of this O-ring 265x7 - FFKM - FFPM - Kalrez 4079 - 75 Shore A - Black - ORS179977 (Equavilent) 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 -15 ºC to 330 ºC. O-rings 565144 are indicated as 179977 and have a DIN 3771 Size of 265 x 7. This item is equal to Dupont Kalrez 4079, Greene Tweed Chemraz 615 & Chemraz 551, PPE Perlast G75B, Trelleborg Isolast J8325 & Isolast J9876 and has an General Purpose (+330ºC) Approval. The chemical name of this Oring is Perfluoroelastomer.
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