The O-Ring, cataloged under National Stock Number 5331-01-443-3840, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-443-3840 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Status | ACTIVE |
| 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 |
|---|---|
| 021.501.008.105 | 3/9 Design control — primary reference New Sulzer Diesel Us Inc |
| KS 27130 | 5/9 Secondary reference Wartsila Diesel Inc |
NSN 5331-01-443-3840 is a O-Ring, classified under FSC 5331, O-ring. Status: active.
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.