The O-Ring, cataloged under National Stock Number 5331-01-485-6402, 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 5 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-485-6402 |
| Primary Part Number | M83485/1-045 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Freudenberg-Nok General Partnership Dba International Seal Co Inc |
| Status | ACTIVE |
| 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 |
| Material Document and Classification | MIL-R-83451/1 MIL SPEC SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 3.962 INCHES MINIMUM AND 4.016 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 | X |
| Part Number | Manufacturer |
|---|---|
| M83485/1-045 PRIMARY | Freudenberg-Nok General Partnership Dba International Seal Co Inc (USA) |
| M83485/1-045 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| ST1946-045 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 5331-01-485-6402 is a O-Ring, manufactured by Freudenberg-Nok General Partnership Dba International Seal Co Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-485-6402 has 3 manufacturer part numbers on file: M83485/1-045 (Freudenberg-Nok General Partnership Dba International Seal Co Inc), M83485/1-045 (Parker-Hannifin Corp Div O-Ring Division), ST1946-045 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for M83485/1-045: 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; Material Document and Classification: MIL-R-83451/1 MIL SPEC SINGLE MATERIAL RESPONSE; Center Hole Diameter: 3.962 INCHES MINIMUM AND 4.016 INCHES MAXIMUM IN. 5 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.