The O-Ring, cataloged under National Stock Number 5331-01-243-5141, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-243-5141 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Reference | Meaning |
|---|---|
| 20A11EM232 | 3/9 Design control — primary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 20A11EM232 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| 95028502 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 20A11EM232 | 5/9 Secondary reference U.S. Government activity |
NSN 5331-01-243-5141 is a O-Ring, classified under FSC 5331, O-ring. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5331-01-342-5439. 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.