The O-Ring, cataloged under National Stock Number 5331-01-160-2087, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Rosomak S.a. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-160-2087 |
| Primary Part Number | 230079072 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Rosomak S.a |
| Status | ACTIVE |
| Temp Rating | -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Special Test Features | SPECIAL QUALITY CONTROL TESTING |
| Criticality Code Justification | ZZZW AND FEAT |
| Elongation Percentage | 160 MAXIMUM |
| Departure From Cited Document | AS MODIFIED BY MATERIAL WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS |
| Peripheral Diameter | 2.568 INCHES NOMINAL IN |
| Center Hole Diameter | 2.352 INCHES MINIMUM AND 2.372 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 | Y |
| Part Number | Manufacturer |
|---|---|
| 230079072 | Rosomak S.a (POL) |
| 230079072 | Leonardo S.p.a. - Electronics Division - Defence Business Area (ITA) |
| Reference | Meaning |
|---|---|
| MS28775-142 | 5/9 Secondary reference U.S. Government activity |
| MS28775-142 | 5/9 Secondary reference U.S. Government activity |
| MS28775-142 | 3/1 Design control — primary reference Sae International Dba Sae International |
| SAE-AS28775 | 3/1 Design control — primary reference Sae International Dba Sae International |
NSN 5331-01-160-2087 is a O-Ring, manufactured by Rosomak S.a, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-160-2087 has 2 manufacturer part numbers on file: 230079072 (Rosomak S.a), 230079072 (Leonardo S.p.a. - Electronics Division - Defence Business Area).
Key specifications for 230079072: Temp Rating: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Special Test Features: SPECIAL QUALITY CONTROL TESTING; Criticality Code Justification: ZZZW AND FEAT. 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.