The O-Ring, cataloged under National Stock Number 5331-01-681-7282, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). 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); Niantic Seal Inc Dba Atco (CAGE 59871); Naval Sea Systems Command (CAGE 53711) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-681-7282 |
| Primary Part Number | 7636682-8 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Naval Sea Systems Command |
| 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 |
|---|---|
| 2-025 N0674-70 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 2-025 N0674-70 | Niantic Seal Inc Dba Atco (USA) |
| 7636682-8 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 7636682/PG.2 | 5/9 Secondary reference Naval Sea Systems Command |
| 7636682 | D/9 Drawing number reference only Naval Sea Systems Command |
| 7636682-8 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
NSN 5331-01-681-7282 is a O-Ring, manufactured by Naval Sea Systems Command, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-681-7282 has 3 manufacturer part numbers on file: 2-025 N0674-70 (Parker-Hannifin Corp Div O-Ring Division), 2-025 N0674-70 (Niantic Seal Inc Dba Atco), 7636682-8 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-690-4795. Verify interchangeability with system specifications before substitution.
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.