The O-Ring, cataloged under National Stock Number 5331-01-494-9588, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Company. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-494-9588 |
| Primary Part Number | 9557K459 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Mcmaster-Carr Supply Company |
| Status | ACTIVE |
| Cross-Sectional Height | 0.312 INCHES NOMINAL IN |
| Center Hole Diameter | 0.187 INCHES NOMINAL IN |
| Material | PLASTIC POLYURETHANE |
| 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 |
|---|---|
| 9557K459 PRIMARY | Mcmaster-Carr Supply Company (USA) |
NSN 5331-01-494-9588 is a O-Ring, manufactured by Mcmaster-Carr Supply Company, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-494-9588 has 1 manufacturer part number on file: 9557K459 (Mcmaster-Carr Supply Company).
Key specifications for 9557K459: Cross-Sectional Height: 0.312 INCHES NOMINAL IN; Special Features: SULPHUR-CURED ETHYLENE PROPYLENE; HIGH ABRASION AND WEATHER RESISTANCE; Center Hole Diameter: 0.187 INCHES NOMINAL IN; Material: PLASTIC POLYURETHANE. 3 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.