The O-Ring, cataloged under National Stock Number 5331-01-534-6570, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corporation Div O-Ring Division. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-534-6570 |
| Primary Part Number | 41581N |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker-Hannifin Corporation Div O-Ring Division |
| Status | ACTIVE |
| Cross-Sectional Height | 0.139 INCHES NOMINAL IN |
| Hardness Rating | 70.0 SHORE DUROMETER A NOMINAL |
| Material Document and Classification | PARKER (60363) COMPOUND N7021 MFR REF SINGLE MATERIAL RESPONSE |
| Center Hole Diameter | 18.630 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 |
|---|---|
| 41581N PRIMARY | Parker-Hannifin Corporation Div O-Ring Division (USA) |
NSN 5331-01-534-6570 is a O-Ring, manufactured by Parker-Hannifin Corporation Div O-Ring Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-534-6570 has 1 manufacturer part number on file: 41581N (Parker-Hannifin Corporation Div O-Ring Division).
Key specifications for 41581N: Cross-Sectional Height: 0.139 INCHES NOMINAL IN; Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL; Material Document and Classification: PARKER (60363) COMPOUND N7021 MFR REF SINGLE MATERIAL RESPONSE; Special Features: ITEM IS FABRICATED USING A VULCANIZED SPLICE OF A LENGTH OF O-CORD. 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.