The O-Ring, cataloged under National Stock Number 5331-01-411-5876, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corp Div O-Ring Division. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5331-01-411-5876 |
| Primary Part Number | ST1946-908 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker-Hannifin Corp Div O-Ring Division |
| Status | ACTIVE |
| Cross-Sectional Height | 0.084 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-R-83485/1 MIL SPEC SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 0.635 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN |
| Material | RUBBER FLUOROCARBON CLASS FPM |
| 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 |
|---|---|
| M83485/1-908 | Sae International Dba Sae International (USA) |
| ST1946-908 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| ST1946-908 | Rtx Corporation Div Pratt & Whitney (USA) |
| ST1946-908 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| ST1946-908 PRIMARY | Freudenberg-Nok General Partnership Dba International Seal Co Inc (USA) |
| ST1946-908 PRIMARY | Acushnet Rubber Company, Inc. Dba Precix (USA) |
| Reference | Meaning |
|---|---|
| 3-908 V0835-75 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| 5331PL1677677 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| MIL-R-83485/1 | 5/9 Secondary reference U.S. Government activity |
| V0835 3-908 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| M83485/1-908 | 5/9 Secondary reference U.S. Government activity |
| AMS-R-83485/1 | 5/9 Secondary reference U.S. Government activity |
| M834851/1-908 | 5/9 Secondary reference U.S. Government activity |
NSN 5331-01-411-5876 is a O-Ring, manufactured by Parker-Hannifin Corp Div O-Ring Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-411-5876 has 6 manufacturer part numbers on file: M83485/1-908 (Sae International Dba Sae International), ST1946-908 (Parker-Hannifin Corp Div O-Ring Division), ST1946-908 (Rtx Corporation Div Pratt & Whitney), ST1946-908 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), ST1946-908 (Freudenberg-Nok General Partnership Dba International Seal Co Inc) and 1 more.
1 possible match (shared part number, not a government interchangeability claim): 5331-01-670-2898. Verify interchangeability with system specifications before substitution.
Key specifications for ST1946-908: Cross-Sectional Height: 0.084 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN; Material Document and Classification: MIL-R-83485/1 MIL SPEC SINGLE MATERIAL RESPONSE; Center Hole Diameter: 0.635 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN; Material: RUBBER FLUOROCARBON CLASS FPM. 4 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.