The O-Ring, cataloged under National Stock Number 5331-01-567-1221, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-567-1221 |
| Primary Part Number | P160016 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Donaldson Company, Inc. |
| Status | ACTIVE |
| Cross-Sectional Height | 0.210 INCHES NOMINAL IN |
| Center Hole Diameter | 4.725 INCHES NOMINAL 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 |
|---|---|
| P160016 PRIMARY | Donaldson Company, Inc. (USA) |
NSN 5331-01-567-1221 is a O-Ring, manufactured by Donaldson Company, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-567-1221 has 1 manufacturer part number on file: P160016 (Donaldson Company, Inc.).
Key specifications for P160016: Cross-Sectional Height: 0.210 INCHES NOMINAL IN; Center Hole Diameter: 4.725 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: HEAD O-RING; End Item Identification: HAK05 RETURN-LINE FILTER. 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.