The O-Ring, cataloged under National Stock Number 5331-01-169-0653, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5331-01-169-0653 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Status | CANCELLED |
| Temp Rating | -90.0 FAHRENHEIT AND 350.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.670 INCHES MINIMUM AND 0.730 INCHES MAXIMUM IN |
| Outside Diameter | 1.485 INCHES MINIMUM AND 1.523 INCHES MAXIMUM IN |
| Hardness Rating | 75.0 SHORE DUROMETER A MINIMUM AND 85.0 SHORE DUROMETER A MAXIMUM |
| Elongation Percentage | 125 MAXIMUM |
| Color | BLUE |
| Center Hole Diameter | 1.351 INCHES MINIMUM AND 1.377 INCHES MAXIMUM IN |
| Material | RUBBER FLUOROSILICONE CLASS FQ |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Reference | Meaning |
|---|---|
| L1218 2-028 | 5/1 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| MIL-R-25988/4 | 5/9 Secondary reference U.S. Government activity |
| C212-558028 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 2-028L806-80 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| M25988/4-028 | 2/2 Government specification standardization U.S. Government activity |
| 2-028 L1007-80 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| MIL-R-25988 | 5/9 Secondary reference U.S. Government activity |
| 2-028 L806-80 | 5/9 Secondary reference Parker Hannifin Gmbh O-Ring Division |
| MS25988/4-028 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 2-028 L1218-80 | 5/1 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| MIL-DTL-25988/4 | 4/1 Identification reference U.S. Government activity |
NSN 5331-01-169-0653 is a O-Ring, classified under FSC 5331, O-ring. Status: cancelled.
Key specifications for 5331-01-169-0653: Temp Rating: -90.0 FAHRENHEIT AND 350.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.670 INCHES MINIMUM AND 0.730 INCHES MAXIMUM IN; Outside Diameter: 1.485 INCHES MINIMUM AND 1.523 INCHES MAXIMUM IN; Hardness Rating: 75.0 SHORE DUROMETER A MINIMUM AND 85.0 SHORE DUROMETER A MAXIMUM. 8 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.
NSN 5331-01-169-0653 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.