The O-Ring, cataloged under National Stock Number 5331-01-390-9657, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Interspiro Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-390-9657 |
| Primary Part Number | 336-900-268 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Interspiro Inc |
| Status | ACTIVE |
| Criticality Code Justification | MATT |
| Material | RUBBER ETHYLENE-PROPYLENE-DIENE CLASS EPDM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 336-900-268 PRIMARY | Interspiro Inc (USA) |
| Reference | Meaning |
|---|---|
| 336-190-790 | 5/9 Secondary reference Interspiro Inc |
NSN 5331-01-390-9657 is a O-Ring, manufactured by Interspiro Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-390-9657 has 1 manufacturer part number on file: 336-900-268 (Interspiro Inc).
Key specifications for 336-900-268: Criticality Code Justification: MATT; Material: RUBBER ETHYLENE-PROPYLENE-DIENE CLASS EPDM. 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.