The O-Ring, cataloged under National Stock Number 5331-01-228-4756, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-228-4756 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Status | ACTIVE |
| Cross-Sectional Height | 0.250 INCHES NOMINAL IN |
| Hardness Rating | 50.0 SHORE DUROMETER A NOMINAL |
| Criticality Code Justification | ZZZY |
| Elongation Percentage | 300 MAXIMUM |
| Center Hole Diameter | 0.562 INCHES NOMINAL IN |
| Material | RUBBER CHLOROPRENE CLASS CR |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| 1510 GLASS WASHER | 3/9 Design control — primary reference U.S. Government activity |
NSN 5331-01-228-4756 is a O-Ring, classified under FSC 5331, O-ring. Status: active.
Key specifications for 5331-01-228-4756: Cross-Sectional Height: 0.250 INCHES NOMINAL IN; Hardness Rating: 50.0 SHORE DUROMETER A NOMINAL; Criticality Code Justification: ZZZY; Elongation Percentage: 300 MAXIMUM. 7 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.