The O-Ring, cataloged under National Stock Number 5331-01-381-0033, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Velan Valve Corp.. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Velan Valve Corp. (CAGE 57574) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-381-0033 |
| Primary Part Number | 3582-003-375/376 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Velan Valve Corp. |
| 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 |
|---|---|
| 33764-15 PC11 .25IN | Velan Valve Corp. (USA) |
| 3582-003-375/376 PRIMARY | Velan Valve Corp. (USA) |
| Reference | Meaning |
|---|---|
| 3582-003-215 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 3582-003-172/230 | 5/9 Secondary reference Velan Valve Corp. |
NSN 5331-01-381-0033 is a O-Ring, manufactured by Velan Valve Corp., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-381-0033 has 2 manufacturer part numbers on file: 33764-15 PC11 .25IN (Velan Valve Corp.), 3582-003-375/376 (Velan Valve Corp.).
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.