The O-Ring, cataloged under National Stock Number 5331-01-475-6359, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Ge Aviation Systems Limited Div Dowty Propellers. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 5331-01-475-6359 |
| Primary Part Number | P998021 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Ge Aviation Systems Limited Div Dowty Propellers |
| 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 |
|---|---|
| P998021 | Ge Aviation Systems Limited Div Dowty Propellers (GBR) |
| Reference | Meaning |
|---|---|
| 750420509 | 3/2 Design control — primary reference U.S. Government activity |
| 750420509 | 5/9 Secondary reference Lockheed Martin Aeronautical Systems Support Company Dba Lmassc |
| P998021 | 5/2 Secondary reference U.S. Government activity |
| 750420509 | 5/9 Secondary reference Lockheed Martin Services, Llc |
| 750420509 | 5/9 Secondary reference Ge Aviation Systems Limited Div Dowty Propellers |
| 5331PL1019678 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5331-01-475-6359 is a O-Ring, manufactured by Ge Aviation Systems Limited Div Dowty Propellers, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-475-6359 has 1 manufacturer part number on file: P998021 (Ge Aviation Systems Limited Div Dowty Propellers).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-497-8296. Verify interchangeability with system specifications before substitution.
Key specifications for P998021: Part Name Assigned by Controlling Agency: O-RING, AIRCRAFT, MAT; End Item Identification: C-130J. 0 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.