The O-Ring, cataloged under National Stock Number 5331-01-134-0613, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Philadelphia Valve Co. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Philadelphia Valve Co (CAGE 77254) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-134-0613 |
| Primary Part Number | 4437-4 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Philadelphia Valve Co |
| 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 |
|---|---|
| 4437-4 PRIMARY | Philadelphia Valve Co (USA) |
NSN 5331-01-134-0613 is a O-Ring, manufactured by Philadelphia Valve Co, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-134-0613 has 1 manufacturer part number on file: 4437-4 (Philadelphia Valve Co).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-605-2126. Verify interchangeability with system specifications before substitution.
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.