The O-Ring, cataloged under National Stock Number 5331-01-583-4137, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Wbparts Inc. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-583-4137 |
| Primary Part Number | 391 2881 801 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Wbparts Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.070 INCHES NOMINAL IN |
| Center Hole Diameter | 0.551 INCHES NOMINAL IN |
| 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 |
|---|---|
| 391 2881 801 | Wbparts Inc (USA) |
| Reference | Meaning |
|---|---|
| 391 2881 801 | 3/9 Design control — primary reference Parker Hannifin Corporation Dba Hydraulic Pump/motor Duv Div Hydraulic Pump Division |
NSN 5331-01-583-4137 is a O-Ring, manufactured by Wbparts Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-583-4137 has 1 manufacturer part number on file: 391 2881 801 (Wbparts Inc).
Key specifications for 391 2881 801: Cross-Sectional Height: 0.070 INCHES NOMINAL IN; Special Features: SECTION 6 WORK SECTION ASSEMBLY, TILT FIGURE 6.92 INDEX NO. 28 (PAGE 6-191); Center Hole Diameter: 0.551 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: SEAL O-RING. 2 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.