The O-Ring, cataloged under National Stock Number 5331-00-421-5020, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Breeze-Eastern Llc. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5331-00-421-5020 |
| Primary Part Number | Y1175-6-5 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Breeze-Eastern Llc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Elongation Percentage | 250 MAXIMUM |
| Center Hole Diameter | 4.224 INCHES MINIMUM AND 4.254 INCHES MAXIMUM 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 |
|---|---|
| Y1175-6-5 PRIMARY | Breeze-Eastern Llc (USA) |
| Reference | Meaning |
|---|---|
| 2-046 N4771-70 | 5/9 Secondary reference Parker Hannifin Gmbh O-Ring Division |
| 2-046-47-071 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
NSN 5331-00-421-5020 is a O-Ring, manufactured by Breeze-Eastern Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-421-5020 has 1 manufacturer part number on file: Y1175-6-5 (Breeze-Eastern Llc).
Key specifications for Y1175-6-5: Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL; Elongation Percentage: 250 MAXIMUM; Center Hole Diameter: 4.224 INCHES MINIMUM AND 4.254 INCHES MAXIMUM IN. 5 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.