The O-Ring, cataloged under National Stock Number 5331-01-439-5355, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5331-01-439-5355 |
| Primary Part Number | 19-04-W533-1285 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division |
| Status | ACTIVE |
| Cross-Sectional Height | 0.057 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN |
| Center Hole Diameter | 1.740 INCHES MINIMUM AND 1.780 INCHES MAXIMUM IN |
| Material | RUBBER SILICONE CLASS Q |
| 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 |
|---|---|
| 19-04-W533-1285 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division (USA) |
| Reference | Meaning |
|---|---|
| 106381-003 | 5/9 Secondary reference Ge Aviation Systems Llc |
| 106381-003 | 5/9 Secondary reference Ge Aviation Systems Llc Dba Ge Aviation |
NSN 5331-01-439-5355 is a O-Ring, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-439-5355 has 1 manufacturer part number on file: 19-04-W533-1285 (Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division).
Key specifications for 19-04-W533-1285: Cross-Sectional Height: 0.057 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN; Center Hole Diameter: 1.740 INCHES MINIMUM AND 1.780 INCHES MAXIMUM IN; Material: RUBBER SILICONE CLASS Q. 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.