The O-Ring, cataloged under National Stock Number 5331-01-572-4239, 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 Corporate Headquarters. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-572-4239 |
| Primary Part Number | ES-87 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters |
| Status | ACTIVE |
| Cross-Sectional Height | 0.500 INCHES NOMINAL IN |
| Material | RUBBER |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5331-01-572-4239 is a O-Ring, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-572-4239 has 2 manufacturer part numbers on file: ES-87 (Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters), ES-87 (Parker Hannifin Canada Div Fluid Connectors Canada).
Key specifications for ES-87: Cross-Sectional Height: 0.500 INCHES NOMINAL IN; Special Features: NITRILE RUBBER; Part Name Assigned by Controlling Agency: PRESTOMATIC AIR BRAKE PUSH IN FITTING; End Item Identification: STRYKER; M8. 2 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.