The O-Ring, cataloged under National Stock Number 5331-00-857-4425, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Boeing Distribution Services X, Inc.. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-857-4425 |
| Primary Part Number | S8990-524 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Boeing Distribution Services X, Inc. |
| Status | ACTIVE |
| Cross-Sectional Height | 0.098 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN |
| Center Hole Diameter | 1.362 INCHES MINIMUM AND 1.408 INCHES MAXIMUM IN |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| S8990-524 | Boeing Distribution Services X, Inc. (USA) |
| Reference | Meaning |
|---|---|
| S8990-524 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
| S8990-524 | 5/9 Secondary reference Federal-Mogul Corp Government Sales Dept |
| S8990-524 | 5/9 Secondary reference Alliedsignal Inc Dba Allied-Signal Aerospace Co |
| S8990-524 | 5/9 Secondary reference U.S. Government activity |
| S8990-524 | 5/9 Secondary reference Parco, Llc |
| S8990-524 | C/1 Advisory reference — outside the item-of-supply concept Honeywell International Inc. Div Aerospace - Torrance |
| S8990-524 | 5/9 Secondary reference Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| S8990-524 | 3/2 Design control — primary reference U.S. Government activity |
| S8990-524 | 5/9 Secondary reference Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp |
| S8990-524 | 5/9 Secondary reference Parker Hannifin Corporation Div O-Ring Division |
| S8990-524 | 5/9 Secondary reference Meinke Model Engineering |
NSN 5331-00-857-4425 is a O-Ring, manufactured by Boeing Distribution Services X, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-857-4425 has 1 manufacturer part number on file: S8990-524 (Boeing Distribution Services X, Inc.).
Key specifications for S8990-524: Cross-Sectional Height: 0.098 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN; Center Hole Diameter: 1.362 INCHES MINIMUM AND 1.408 INCHES MAXIMUM IN; Material: RUBBER SYNTHETIC. 3 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.