The O-Ring, cataloged under National Stock Number 5331-01-331-1284, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-331-1284 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Center Hole Diameter | 3.581 INCHES MINIMUM AND 3.637 INCHES MAXIMUM IN |
| Material | PLASTIC POLYHEXAMETHYLENE ADIPAMIDE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 2-239UR90 | 5/9 Secondary reference Freudenberg-Nok General Partnership |
| 000-23900MG | 3/9 Design control — primary reference Freudenberg-Nok General Partnership |
NSN 5331-01-331-1284 is a O-Ring, classified under FSC 5331, O-ring. Status: active.
Key specifications for 5331-01-331-1284: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Center Hole Diameter: 3.581 INCHES MINIMUM AND 3.637 INCHES MAXIMUM IN; Material: PLASTIC POLYHEXAMETHYLENE ADIPAMIDE. 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.