The O-Ring, cataloged under National Stock Number 5331-01-508-0156, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Delphi Powertrain Systems, Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Delphi Powertrain Systems, Llc (CAGE 63632) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-508-0156 |
| Primary Part Number | 7139-821 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Delphi Powertrain Systems, Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| 7139-821 PRIMARY | Delphi Powertrain Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 5331PL0825667 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5331-01-508-0156 is a O-Ring, manufactured by Delphi Powertrain Systems, Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-508-0156 has 1 manufacturer part number on file: 7139-821 (Delphi Powertrain Systems, Llc).
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.