Trelleborg OR-FKM-50X4 Fluoroelastomer (FKM/Viton equivalent) O-Ring, 75 Shore A hardness. Inner diameter 50mm, cross-section 4mm. Wear-part interchangeable across the OEM installed base; specify by original equipment manufacturer reference to avoid dimensional mismatch.
| Material | FKM 75A |
| Standard | ISO 3601 |
| Standard size | 50x4mm |
| Pressure rating | To 250 bar (system dependent) |
| Temperature range | -20°C to +200°C |
| Approval | FDA 21 CFR 177.2600, USP Class VI, 3-A Sanitary, NSF 51, EC 1935/2004, WRAS |
| Standards | ISO 3601-1, ISO 3601-3, AS568 |
| Approvals | WRAS, NSF |
| HS code | 4016.93 |
| Material | FKM 75A |
| Pressure rating | To 250 bar (system dependent) |
| Temperature range | -20°C to +200°C |
| Primary standard | ISO 3601 |
| Standard size | 50x4mm |
| MOQ | 1 |
Metric FKM 75 Shore A O-ring. Trelleborg Sealing Solutions offers this dimension in Viton FKM; consult the O-Rings & Back-up Rings catalog (profile G, metric).