SKF OR21.89X2.62-F70 o-ring / back-up ring. SKF O-ring in nitrile (NBR), hydrogenated nitrile (HNBR), fluoroelastomer (FKM / Viton), ethylene-propylene (EPDM) or silicone (VMQ). Dimensioned to AS 568A imperial, ISO 3601 metric, or JIS B 2401. Companion PTFE / thermoplastic back-up rings extend service pressure to 700 bar in dynamic hydraulic applications by preventing extrusion into the sealing gap.
| Type | O-ring / back-up ring |
| Designation | SKF OR21.89X2.62-F70 |
| HS code | 4016.93 |
| O-ring inside diameter | 21.89 mm |
| O-ring cross section | 2.62 mm |
| Dash-number | 118 |
| Compound | Fluorocarbon rubber (F70) |
| Product net weight | 0.0008 kg |
| eClass code | 23-07-01-90 |
| UNSPSC code | 31181602 |
| Material | As declared by SKF designation suffix |
| Temperature range | Per SKF product data |
| Primary standard | SKF designation convention (see description for governing ISO / DIN) |
| MOQ | 1 |
Interchange with peer OEM equivalents on identical boundary plan and execution — confirm cage, clearance, sealing and precision-class suffix before substitution.