The O-Ring, cataloged under National Stock Number 5331-01-501-3073, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Freudenberg-Nok General Partnership Dba International Seal Co Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-501-3073 |
| Primary Part Number | ST1946-048 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Freudenberg-Nok General Partnership Dba International Seal Co Inc |
| Status | ACTIVE |
| Temp Rating | -40.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Hardness Rating | 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM |
| Criticality Code Justification | MATT |
| Material Document and Classification | AMS-R-83485 ASSN STD SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 4.709 INCHES MINIMUM AND 4.769 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 |
|---|---|
| ST1946-048 PRIMARY | Freudenberg-Nok General Partnership Dba International Seal Co Inc (USA) |
| ST1946-048 PRIMARY | Acushnet Rubber Company, Inc. Dba Precix (USA) |
| ST1946-048 PRIMARY | Rtx Corporation Div Pratt & Whitney (USA) |
| ST1946-048 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| ST1946-048 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| Reference | Meaning |
|---|---|
| 5331PL0658574 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5331-01-501-3073 is a O-Ring, manufactured by Freudenberg-Nok General Partnership Dba International Seal Co Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-501-3073 has 5 manufacturer part numbers on file: ST1946-048 (Freudenberg-Nok General Partnership Dba International Seal Co Inc), ST1946-048 (Acushnet Rubber Company, Inc. Dba Precix), ST1946-048 (Rtx Corporation Div Pratt & Whitney), ST1946-048 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), ST1946-048 (Parker-Hannifin Corp Div O-Ring Division).
Key specifications for ST1946-048: Temp Rating: -40.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Hardness Rating: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM; Criticality Code Justification: MATT. 7 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.