The O-Ring, cataloged under National Stock Number 5331-01-234-4763, 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 7 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-234-4763 |
| Primary Part Number | AS3578-157CP |
| 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 |
| Hardness Rating | 65.0 SHORE DUROMETER A NOMINAL |
| Criticality Code Justification | ZZZY |
| Elongation Percentage | 200 MAXIMUM |
| Peripheral Diameter | 4.693 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| AS3578-157CP | Sae International Dba Sae International (USA) |
| MS9021-157CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| AS3578-157CP | 5/9 Secondary reference U.S. Government activity |
| 10176990 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 2-157 N506-65 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 2-157-N506-65CP | 5/9 Secondary reference Applied Industrial Technologies -- Pa Llc Div Harrisburg |
| MS9021-157 | 5/9 Secondary reference Cosmodyne, Llc Dba Cosmodyne Llc |
| SAE-AS3578CP | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| SAE-AS3578 | 3/1 Design control — primary reference Sae International Dba Sae International |
NSN 5331-01-234-4763 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-234-4763 has 2 manufacturer part numbers on file: AS3578-157CP (Sae International Dba Sae International), MS9021-157CP (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-372-9004. Verify interchangeability with system specifications before substitution.
Key specifications for AS3578-157CP: Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Hardness Rating: 65.0 SHORE DUROMETER A NOMINAL; Criticality Code Justification: ZZZY; Elongation Percentage: 200 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.