The O-Ring, cataloged under National Stock Number 5331-01-281-3848, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Acushnet Rubber Company, Inc. Dba Precix. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | Acushnet Rubber Company, Inc. Dba Precix (CAGE 70106); Parker-Hannifin Corp Div O-Ring Division (CAGE 02697); Freudenberg-Nok General Partnership Dba International Seal Co Inc (CAGE 1CN74); Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (CAGE 77445) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-281-3848 |
| Primary Part Number | ST1946-012 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Acushnet Rubber Company, Inc. Dba Precix |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| ST1946-012 PRIMARY | Acushnet Rubber Company, Inc. Dba Precix (USA) |
| ST1946-012 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| ST1946-012 PRIMARY | Freudenberg-Nok General Partnership Dba International Seal Co Inc (USA) |
| ST1946-012 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| M83485/1-012 | 5/9 Secondary reference U.S. Government activity |
| 5331PL1850744 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| V0835-75 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| M83485/1-012 | 5/9 Secondary reference U.S. Government activity |
| 10441973 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| ST1946-012 | 5/9 Secondary reference Rtx Corporation Div Pratt & Whitney |
| 5331PL0658518 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 2-012V835-75 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| 74222 FIND 4 | 5/9 Secondary reference U.S. Government activity |
NSN 5331-01-281-3848 is a O-Ring, manufactured by Acushnet Rubber Company, Inc. Dba Precix, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-281-3848 has 4 manufacturer part numbers on file: ST1946-012 (Acushnet Rubber Company, Inc. Dba Precix), ST1946-012 (Parker-Hannifin Corp Div O-Ring Division), ST1946-012 (Freudenberg-Nok General Partnership Dba International Seal Co Inc), ST1946-012 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
2 possible matches (shared part number, not a government interchangeability claim): 5331-01-646-7894, 5331-01-670-1694. 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.