The O-Ring, cataloged under National Stock Number 5331-01-031-8243, 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. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 13 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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); Parker Brownsville Servicio S.a. De C.v. (CAGE SE397); Vincorion Advanced Systems Gmbh Div Jenoptik Defense and Civil Systems (CAGE D3683) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-031-8243 |
| Primary Part Number | 2507294-55 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker-Hannifin Corp Div O-Ring Division |
| Status | ACTIVE |
| 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 |
|---|---|
| 2507294-55 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 2507294-55 | Parker Brownsville Servicio S.a. De C.v. (MEX) |
| 272.333 547 | Vincorion Advanced Systems Gmbh Div Jenoptik Defense and Civil Systems (DEU) |
| Reference | Meaning |
|---|---|
| 158-B46A | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 104X158A | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| P49708-0158 | 5/9 Secondary reference Bosch Rexroth Corporation Div Bosch Rexroth |
| CM1-158-B46 | 5/9 Secondary reference Flowserve Corp Dba Automax Actuators Div Flowserve Us Company |
| CM1-158-B46A | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 2507294 | D/9 Drawing number reference only Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 01-435-0366-4 PIECE 81 | 5/9 Secondary reference Flowserve Corp Dba Automax Actuators Div Flowserve Us Company |
| 2507294-55 | 5/9 Secondary reference Parco, Llc |
| 0065210.26.63 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 2-158 N674-7 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| 2-158 N674-70 | 5/9 Secondary reference Parker Hannifin Gmbh O-Ring Division |
| 2507294-55 | 5/9 Secondary reference Naval Sea Systems Command |
| 2507294-55 | 7/2 Vendor item drawing reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 5331-01-031-8243 is a O-Ring, manufactured by Parker-Hannifin Corp Div O-Ring Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-031-8243 has 3 manufacturer part numbers on file: 2507294-55 (Parker-Hannifin Corp Div O-Ring Division), 2507294-55 (Parker Brownsville Servicio S.a. De C.v.), 272.333 547 (Vincorion Advanced Systems Gmbh Div Jenoptik Defense and Civil Systems).
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.