The O-Ring, cataloged under National Stock Number 5331-01-106-9568, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Parker Hannifin Corporation Div O-Ring Division. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-106-9568 |
| Primary Part Number | 158-7377 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker Hannifin Corporation Div O-Ring Division |
| Status | ACTIVE |
| Cross-Sectional Height | 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Outside Diameter | 4.907 INCHES MINIMUM AND 4.979 INCHES MAXIMUM IN |
| Hardness Rating | 75.0 SHORE DUROMETER A NOMINAL |
| Center Hole Diameter | 4.737 INCHES NOMINAL 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 |
|---|---|
| 158-7377 PRIMARY | Parker Hannifin Corporation Div O-Ring Division (USA) |
| PRP158-7377 PRIMARY | Parker Hannifin Corporation Div O-Ring Division (USA) |
| AS568-158MIL-P-25732 | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| AS568-158MIL-P-25732 | 5/9 Secondary reference U.S. Government activity |
| 2-158 N304-65 | 5/9 Secondary reference Parker Hannifin Gmbh O-Ring Division |
| 2-158 PSI-30-5 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| 158-711-70 | 5/9 Secondary reference Parker Hannifin Corporation Div O-Ring Division |
| AS568-158MIL-P-5516CLASSB | 5/9 Secondary reference U.S. Government activity |
| 158-737-70 | 5/9 Secondary reference Parker Hannifin Corporation Div O-Ring Division |
| PRP158-7117 | 5/9 Secondary reference Parker Hannifin Corporation Div O-Ring Division |
| 158-7117 | 5/9 Secondary reference Parker Hannifin Corporation Div O-Ring Division |
NSN 5331-01-106-9568 is a O-Ring, manufactured by Parker Hannifin Corporation Div O-Ring Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-106-9568 has 3 manufacturer part numbers on file: 158-7377 (Parker Hannifin Corporation Div O-Ring Division), PRP158-7377 (Parker Hannifin Corporation Div O-Ring Division), AS568-158MIL-P-25732 (Sae International Dba Sae International).
Key specifications for 158-7377: Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Outside Diameter: 4.907 INCHES MINIMUM AND 4.979 INCHES MAXIMUM IN; Hardness Rating: 75.0 SHORE DUROMETER A NOMINAL; Center Hole Diameter: 4.737 INCHES NOMINAL IN. 5 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.