The O-Ring, cataloged under National Stock Number 5331-01-115-3759, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp. The record lists 4 manufacturer part numbers 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 | Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp (CAGE 77969); The Boeing Company (CAGE 77272) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-115-3759 |
| Primary Part Number | 40516-5 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp |
| 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 |
|---|---|
| 40516-5 PRIMARY | Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp (USA) |
| 145DS029-5 PRIMARY | Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp (USA) |
| 77272/145DS029-5 | The Boeing Company (USA) |
| 145DS029-5 PRIMARY | The Boeing Company (USA) |
NSN 5331-01-115-3759 is a O-Ring, manufactured by Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-115-3759 has 4 manufacturer part numbers on file: 40516-5 (Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp), 145DS029-5 (Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp), 77272/145DS029-5 (The Boeing Company), 145DS029-5 (The Boeing Company).
1 possible match (shared part number, not a government interchangeability claim): 5950-01-290-7687. 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.