Parker fluoroelastomer (FKM/Viton) O-ring for hydraulic + petrochem service. Viton A 90 Shore high-pressure.
| Compound | Parker V1238-90 |
| Base | FKM Type-A fluoroelastomer |
| Size | AS568-115 (17.12×2.62 mm ID×CS) |
| Hardness | 90±5 Shore A |
| Temperature | -20°C to +200°C (GFLT grades -40°C) |
| Note | Viton A 90 Shore high-pressure |
| Material | FKM / Viton A |
| Temperature range | -20°C to +200°C |
| Primary standard | AS568B / ISO 3601-1 |
| MOQ | 1 |
Direct interchange with Parker 2-xxx size codes, SKF / Trelleborg / James Walker FKM compounds.