The O-Ring, cataloged under National Stock Number 5331-01-503-2781, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corp Div O-Ring Division. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-503-2781 |
| Primary Part Number | E0603 2-370 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker-Hannifin Corp Div O-Ring Division |
| Status | ACTIVE |
| Cross-Sectional Height | 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Material Document and Classification | E0603 MFR REF SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 8.175 INCHES MINIMUM AND 8.275 INCHES MAXIMUM IN |
| Material | RUBBER ETHYLENE-PROPYLENE-DIENE CLASS EPDM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| E0603 2-370 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 6392790 FIND 42 | Naval Sea Systems Command (USA) |
| 2-370-E603-70 | Parker-Hannifin Corp Div O-Ring Division (USA) |
NSN 5331-01-503-2781 is a O-Ring, manufactured by Parker-Hannifin Corp Div O-Ring Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-503-2781 has 3 manufacturer part numbers on file: E0603 2-370 (Parker-Hannifin Corp Div O-Ring Division), 6392790 FIND 42 (Naval Sea Systems Command), 2-370-E603-70 (Parker-Hannifin Corp Div O-Ring Division).
Key specifications for E0603 2-370: Cross-Sectional Height: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN; Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL; Material Document and Classification: E0603 MFR REF SINGLE MATERIAL RESPONSE; Center Hole Diameter: 8.175 INCHES MINIMUM AND 8.275 INCHES MAXIMUM IN. 5 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.