The O-Ring, cataloged under National Stock Number 5331-01-210-2697, 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 9 specifications, cited from the U.S. Government catalog. The record lists 9 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5331-01-210-2697 |
| Primary Part Number | 309-7377 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker Hannifin Corporation Div O-Ring Division |
| Status | ACTIVE |
| Temp Rating | -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Hardness Rating | 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM |
| Material Document and Classification | MIL-P-25732 MIL SPEC SINGLE MATERIAL RESPONSE |
| Specification/standard Data | 96906-MS28775/INACTIVE/ GOVERNMENT STANDARD AND 81343-AS568 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Peripheral Diameter | 0.817 INCHES MINIMUM AND 0.847 INCHES MAXIMUM IN |
| Color | BLACK |
| Center Hole Diameter | 0.407 INCHES MINIMUM AND 0.417 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 |
|---|---|
| AS568-309 MIL-P-25732 | Sae International Dba Sae International (USA) |
| PRP309-7377 | Parker Hannifin Corporation Div O-Ring Division (USA) |
| AS568-309SE832-75 | Hutchinson Seal De Mexico Stillman Seal Division Div Stillman Seal,jpr,espa (MEX) |
| 309-7377 PRIMARY | Parker Hannifin Corporation Div O-Ring Division (USA) |
| P48026-309 PRIMARY | Acushnet Rubber Company, Inc. Dba Precix (USA) |
| AS568-309D25 PRIMARY | Federal-Mogul Corp Government Sales Dept (USA) |
| MS28775-309 PRIMARY | Sae International Dba Sae International (USA) |
| PRP568-309-4067-70 PRIMARY | Parco, Llc (USA) |
| N0304 2-309 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| Reference | Meaning |
|---|---|
| MS28775-309 | 5/9 Secondary reference U.S. Government activity |
| 2-309 N304-75 | 5/9 Secondary reference Parker Hannifin Gmbh O-Ring Division |
| 2-309 N304-75 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| AS568-309SR832-75 | 5/2 Secondary reference U.S. Government activity |
| SAE-AS28775 | 3/1 Design control — primary reference Sae International Dba Sae International |
| 1446-309 | 3/2 Design control — primary reference U.S. Government activity |
| MS28775-309 | 5/9 Secondary reference U.S. Government activity |
| AS568-309 MIL-P-25732 | 5/9 Secondary reference U.S. Government activity |
NSN 5331-01-210-2697 is a O-Ring, manufactured by Parker Hannifin Corporation Div O-Ring Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-210-2697 has 9 manufacturer part numbers on file: AS568-309 MIL-P-25732 (Sae International Dba Sae International), PRP309-7377 (Parker Hannifin Corporation Div O-Ring Division), AS568-309SE832-75 (Hutchinson Seal De Mexico Stillman Seal Division Div Stillman Seal,jpr,espa), 309-7377 (Parker Hannifin Corporation Div O-Ring Division), P48026-309 (Acushnet Rubber Company, Inc. Dba Precix) and 4 more.
Key specifications for 309-7377: Temp Rating: -65.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN; Hardness Rating: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM; Material Document and Classification: MIL-P-25732 MIL SPEC SINGLE MATERIAL RESPONSE. 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.