The O-Ring, cataloged under National Stock Number 5331-01-621-3320, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Parker Hannifin Corp Dba Pneutronics Div Aerospace Filtration Division. Government technical data includes 4 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 | 5331-01-621-3320 |
| Primary Part Number | 421X700 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker Hannifin Corp Dba Pneutronics Div Aerospace Filtration Division |
| Status | ACTIVE |
| Cross-Sectional Height | 0.330 INCHES NOMINAL IN |
| Outside Diameter | 36.8 MILLIMETERS NOMINAL MM |
| Center Hole Diameter | 28.5 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 421X700 PRIMARY | Parker Hannifin Corp Dba Pneutronics Div Aerospace Filtration Division (USA) |
NSN 5331-01-621-3320 is a O-Ring, manufactured by Parker Hannifin Corp Dba Pneutronics Div Aerospace Filtration Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-621-3320 has 1 manufacturer part number on file: 421X700 (Parker Hannifin Corp Dba Pneutronics Div Aerospace Filtration Division).
Key specifications for 421X700: Cross-Sectional Height: 0.330 INCHES NOMINAL IN; Outside Diameter: 36.8 MILLIMETERS NOMINAL MM; Center Hole Diameter: 28.5 MILLIMETERS NOMINAL MM; Part Name Assigned by Controlling Agency: O-RING. 4 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.