The O-Ring, cataloged under National Stock Number 5331-01-457-5114, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5331-01-457-5114 |
| Primary Part Number | ST1946-219 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Temp Rating | -20.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Hardness Rating | 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM |
| Material Document and Classification | MIL-R-83485 MIL SPEC SINGLE MATERIAL RESPONSE |
| Specification/standard Data | 81349-MIL-R-83485/1 GOVERNMENT SPECIFICATION |
| Center Hole Diameter | 1.284 INCHES MINIMUM AND 1.308 INCHES MAXIMUM IN |
| Test Data Document | 81346-ASTM-D1414 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.). |
| 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 | X |
| Part Number | Manufacturer |
|---|---|
| ST1946-219 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 2-219 V0835-75 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| V0835 2-219 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| Reference | Meaning |
|---|---|
| AMS-R-83485/1 | 5/1 Secondary reference Sae International Dba Sae International |
| AMS-R-83485/1-219 | 3/9 Design control — primary reference U.S. Government activity |
| 5331PL1739395 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| M83485/1-219 | 5/2 Secondary reference U.S. Government activity |
| MIL-R-83485/1 | 5/9 Secondary reference U.S. Government activity |
| AMS-R-83485/1 | 5/9 Secondary reference U.S. Government activity |
| 5331PL0658562 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| AMS-R-83485/1-219 | 3/1 Design control — primary reference Sae International Dba Sae International |
NSN 5331-01-457-5114 is a O-Ring, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-457-5114 has 3 manufacturer part numbers on file: ST1946-219 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 2-219 V0835-75 (Parker-Hannifin Corp Div O-Ring Division), V0835 2-219 (Parker-Hannifin Corp Div O-Ring Division).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-682-5761. Verify interchangeability with system specifications before substitution.
Key specifications for ST1946-219: Temp Rating: -20.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Hardness Rating: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM; Material Document and Classification: MIL-R-83485 MIL SPEC SINGLE MATERIAL RESPONSE. 8 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.