The O-Ring, cataloged under National Stock Number 5331-01-259-0838, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Leroi International Inc Dba Compair Leroi. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | Leroi International Inc Dba Compair Leroi (CAGE 1XBP3) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-259-0838 |
| Primary Part Number | 49535 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Leroi International Inc Dba Compair Leroi |
| 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 |
|---|---|
| 49535 PRIMARY | Leroi International Inc Dba Compair Leroi (USA) |
| Reference | Meaning |
|---|---|
| 49535 | 5/9 Secondary reference Compair Kellogg Div of Robertshaw Controls Co |
NSN 5331-01-259-0838 is a O-Ring, manufactured by Leroi International Inc Dba Compair Leroi, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-259-0838 has 1 manufacturer part number on file: 49535 (Leroi International Inc Dba Compair Leroi).
1 possible match (shared part number, not a government interchangeability claim): 2540-01-655-1414. 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.