The O-Ring, cataloged under National Stock Number 5331-01-031-8236, 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 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Parker-Hannifin Corp Div O-Ring Division (CAGE 02697) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-031-8236 |
| Primary Part Number | 2502774-20 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker-Hannifin Corp Div O-Ring Division |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Center Hole Diameter | 11.419 INCHES MINIMUM AND 11.549 INCHES MAXIMUM IN |
| Material | RUBBER ETHYLENE-PROPYLENE CLASS EPM |
| 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 |
|---|---|
| 2502774-20 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| Reference | Meaning |
|---|---|
| 2502774-20 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
| 2502774-20 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 5331-01-031-8236 is a O-Ring, manufactured by Parker-Hannifin Corp Div O-Ring Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-031-8236 has 1 manufacturer part number on file: 2502774-20 (Parker-Hannifin Corp Div O-Ring Division).
Key specifications for 2502774-20: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Center Hole Diameter: 11.419 INCHES MINIMUM AND 11.549 INCHES MAXIMUM IN; Part Name Assigned by Controlling Agency: O-RING; Material: RUBBER ETHYLENE-PROPYLENE CLASS EPM. 3 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.