The O-Ring, cataloged under National Stock Number 5331-01-479-4520, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Mine Safety Appliances Company. Government technical data includes 2 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 | 5331-01-479-4520 |
| Primary Part Number | 635036 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Mine Safety Appliances Company |
| Status | ACTIVE |
| Center Hole Diameter | 0.007 INCHES NOMINAL IN |
| Material | RUBBER FLUOROSILICONE CLASS FQ |
| 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 |
|---|---|
| 635036 PRIMARY | Mine Safety Appliances Company (USA) |
NSN 5331-01-479-4520 is a O-Ring, manufactured by Mine Safety Appliances Company, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-479-4520 has 1 manufacturer part number on file: 635036 (Mine Safety Appliances Company).
Key specifications for 635036: Center Hole Diameter: 0.007 INCHES NOMINAL IN; End Item Identification: SELF CONTAINED BREATHING APPARATUS P/N F-CM10401-1M111-1 ONBOARD 420 FT WAGB COAST GUARD VESSELS FT; Material: RUBBER FLUOROSILICONE CLASS FQ. 2 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.