The O-Ring, cataloged under National Stock Number 5331-01-363-4891, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-363-4891 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Status | ACTIVE |
| Temp Rating | -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Hardness Rating | 68.0 SHORE DUROMETER A MINIMUM |
| Material Document and Classification | MIL-P-25732 MIL SPEC SINGLE MATERIAL RESPONSE |
| Elongation Percentage | 160 MAXIMUM |
| Departure From Cited Document | AS MODIFIED BY SHELF LIFE |
| Peripheral Diameter | 3.620 INCHES MINIMUM AND 3.670 INCHES MAXIMUM IN |
| Center Hole Diameter | 3.210 INCHES MINIMUM AND 3.240 INCHES MAXIMUM 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 |
|---|---|
| SAE-AS28775 | 3/1 Design control — primary reference Sae International Dba Sae International |
| MIL-P-25732 | 4/1 Identification reference U.S. Government activity |
| MS28775-339 | 5/9 Secondary reference U.S. Government activity |
| MS28775-339 | 5/9 Secondary reference U.S. Government activity |
| MS28775-339 | 3/1 Design control — primary reference Sae International Dba Sae International |
NSN 5331-01-363-4891 is a O-Ring, classified under FSC 5331, O-ring. Status: active.
Key specifications for 5331-01-363-4891: Temp Rating: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN; Hardness Rating: 68.0 SHORE DUROMETER A MINIMUM; Material Document and Classification: MIL-P-25732 MIL SPEC SINGLE MATERIAL RESPONSE. 9 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.