The O-Ring, cataloged under National Stock Number 5331-01-372-9004, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-372-9004 |
| Primary Part Number | AS3578-157 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Cross-Sectional Height | 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Elongation Percentage | 200 MAXIMUM |
| Specification/standard Data | 96906-MS9021 GOVERNMENT STANDARD |
| Peripheral Diameter | 4.693 INCHES NOMINAL IN |
| Center Hole Diameter | 4.472 INCHES MINIMUM AND 4.502 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 |
| Part Number | Manufacturer |
|---|---|
| AS3578-157 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| MS9021-157 | 5/9 Secondary reference U.S. Government activity |
| 5330PL1036705 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 10116954 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| AS3578-157 | 3/9 Design control — primary reference U.S. Government activity |
| SAE-AS3578 | 3/1 Design control — primary reference Sae International Dba Sae International |
NSN 5331-01-372-9004 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-372-9004 has 1 manufacturer part number on file: AS3578-157 (Sae International Dba Sae International).
Key specifications for AS3578-157: Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Elongation Percentage: 200 MAXIMUM; Specification/standard Data: 96906-MS9021 GOVERNMENT STANDARD; Peripheral Diameter: 4.693 INCHES NOMINAL IN. 6 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.