The O-Ring, cataloged under National Stock Number 5331-01-438-5237, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Leybold Usa Inc.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | Leybold Usa Inc. (CAGE 0JKC7) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-438-5237 |
| Primary Part Number | 239 70 304 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Leybold Usa Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 239 70 304 PRIMARY | Leybold Usa Inc. (USA) |
| Reference | Meaning |
|---|---|
| 239 70 304 | 5/9 Secondary reference Leybold Vacuum Products Inc |
NSN 5331-01-438-5237 is a O-Ring, manufactured by Leybold Usa Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-438-5237 has 1 manufacturer part number on file: 239 70 304 (Leybold Usa Inc.).
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.