The O-Ring, cataloged under National Stock Number 5331-01-237-4954, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Parker Hannifin Corporation Div O-Ring Division. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 Corporation Div O-Ring Division (CAGE 25184); Lydall Inc Elastomer Products Group (CAGE 70061); Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (CAGE 06725) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-237-4954 |
| Primary Part Number | 28904-7 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker Hannifin Corporation 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) |
| Part Number | Manufacturer |
|---|---|
| 28904-7 | Parker Hannifin Corporation Div O-Ring Division (USA) |
| 28904-7 | Lydall Inc Elastomer Products Group (USA) |
| 28904-7 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| 28904-7 | 5/9 Secondary reference Goshen Mfg Co the Inc |
| 28904-7 | 5/9 Secondary reference Lord Corp Aerospace Products Div |
| 28904-7 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5331-01-237-4954 is a O-Ring, manufactured by Parker Hannifin Corporation Div O-Ring Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-237-4954 has 3 manufacturer part numbers on file: 28904-7 (Parker Hannifin Corporation Div O-Ring Division), 28904-7 (Lydall Inc Elastomer Products Group), 28904-7 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company).
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.