The O-Ring, cataloged under National Stock Number 5331-01-390-8237, 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 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5331-01-390-8237 |
| Primary Part Number | 944-610-205 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Interspiro Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 1.6 MILLIMETERS NOMINAL MM |
| Criticality Code Justification | MATT AND ADYT AND ADVN |
| Center Hole Diameter | 7.1 MILLIMETERS NOMINAL MM |
| Material | RUBBER BUTADIENE NITRILE |
| 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 |
|---|---|
| 944-610-205 PRIMARY | Interspiro Inc (USA) |
| Reference | Meaning |
|---|---|
| 336-190-236 (10 PACK) | 5/9 Secondary reference Interspiro Inc |
NSN 5331-01-390-8237 is a O-Ring, manufactured by Interspiro Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-390-8237 has 1 manufacturer part number on file: 944-610-205 (Interspiro Inc).
Key specifications for 944-610-205: Cross-Sectional Height: 1.6 MILLIMETERS NOMINAL MM; Criticality Code Justification: MATT AND ADYT AND ADVN; Center Hole Diameter: 7.1 MILLIMETERS NOMINAL MM; Material: RUBBER BUTADIENE NITRILE. 4 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.