The O-Ring, cataloged under National Stock Number 5331-01-382-7182, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Mine Safety Appliances Company. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | Mine Safety Appliances Company (CAGE 55799); The O.c. Lugo Co Inc (CAGE 0FMB1) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-382-7182 |
| Primary Part Number | 635953 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Mine Safety Appliances Company |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
NSN 5331-01-382-7182 is a O-Ring, manufactured by Mine Safety Appliances Company, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-382-7182 has 2 manufacturer part numbers on file: 635953 (Mine Safety Appliances Company), 628976 (The O.c. Lugo Co Inc).
1 possible match (shared part number, not a government interchangeability claim): 4320-01-532-7480. 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.