The O-Ring, cataloged under National Stock Number 5331-01-157-6351, 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 6 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5331-01-157-6351 |
| Primary Part Number | AS568-022 3CH915B34EO16EO36 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Temp Rating | -30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.067 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| Outside Diameter | 1.113 INCHES MINIMUM AND 1.145 INCHES MAXIMUM IN |
| Hardness Rating | 90.0 SHORE DUROMETER A NOMINAL |
| Elongation Percentage | 160 MAXIMUM |
| Center Hole Diameter | 0.979 INCHES MINIMUM AND 0.999 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 |
|---|---|
| D0561876 | Calzoni Srl (ITA) |
| 6100-05 | F.p.hydraulique (FRA) |
| 2-022N552-9 | Parker Hannifin France Holding (FRA) |
| 2-022 N552-90 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 2-022N552-90 | Parker Hannifin France Holding (FRA) |
| AS568-022 3CH915B34EO16EO36 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| 1557052-22 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 2-022N522-90 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 2-022 N552-90 | 5/9 Secondary reference Parker Hannifin Gmbh O-Ring Division |
| AS568-022 3CH915B34EO16EO36 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5331-01-157-6351 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-157-6351 has 6 manufacturer part numbers on file: D0561876 (Calzoni Srl), 6100-05 (F.p.hydraulique), 2-022N552-9 (Parker Hannifin France Holding), 2-022 N552-90 (Parker-Hannifin Corp Div O-Ring Division), 2-022N552-90 (Parker Hannifin France Holding) and 1 more.
1 possible match (shared part number, not a government interchangeability claim): 5331-01-279-0493. Verify interchangeability with system specifications before substitution.
Key specifications for AS568-022 3CH915B34EO16EO36: Temp Rating: -30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN; Outside Diameter: 1.113 INCHES MINIMUM AND 1.145 INCHES MAXIMUM IN; Hardness Rating: 90.0 SHORE DUROMETER A NOMINAL. 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.