The O-Ring, cataloged under National Stock Number 5331-01-213-6793, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Donaldson Company, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-213-6793 |
| Primary Part Number | ARP568-139 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Donaldson Company, Inc. |
| Status | ACTIVE |
| Cross-Sectional Height | 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Outside Diameter | 2.381 INCHES NOMINAL IN |
| Center Hole Diameter | 2.158 INCHES MINIMUM AND 2.192 INCHES MAXIMUM 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 |
|---|---|
| ARP568-139 PRIMARY | Donaldson Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 424817 ITEM 24 | 5/9 Secondary reference Donaldson Company, Inc. |
| 424817 ITEM 20 | 5/9 Secondary reference Donaldson Company, Inc. |
NSN 5331-01-213-6793 is a O-Ring, manufactured by Donaldson Company, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-213-6793 has 1 manufacturer part number on file: ARP568-139 (Donaldson Company, Inc.).
Key specifications for ARP568-139: Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Outside Diameter: 2.381 INCHES NOMINAL IN; Center Hole Diameter: 2.158 INCHES MINIMUM AND 2.192 INCHES MAXIMUM IN. 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.