The O-Ring, cataloged under National Stock Number 5331-01-254-6378, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-254-6378 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Status | ACTIVE |
| Temp Rating | -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF |
| Elongation Percentage | 160 MAXIMUM |
| Center Hole Diameter | 26.875 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| 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 |
|---|---|
| 218114232A | 3/2 Design control — primary reference U.S. Government activity |
| H577-3302 (ITEM 222) | 3/9 Design control — primary reference U.S. Government activity |
| 593-7067139-222 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 203-5901557 ITEM 63 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
NSN 5331-01-254-6378 is a O-Ring, classified under FSC 5331, O-ring. Status: active.
Key specifications for 5331-01-254-6378: Temp Rating: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF; Elongation Percentage: 160 MAXIMUM; Center Hole Diameter: 26.875 INCHES NOMINAL IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 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.