The O-Ring, cataloged under National Stock Number 5331-01-504-2736, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Bourns Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-504-2736 |
| Primary Part Number | 11685 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Bourns Inc |
| Status | ACTIVE |
| Material | RUBBER FLUOROCARBON CLASS FPM |
| 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 |
|---|---|
| 11685 PRIMARY | Bourns Inc (USA) |
| Reference | Meaning |
|---|---|
| 11685 | 3/9 Design control — primary reference Cat Pumps Corp |
NSN 5331-01-504-2736 is a O-Ring, manufactured by Bourns Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-504-2736 has 1 manufacturer part number on file: 11685 (Bourns Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-645-0442, 5985-01-647-3750. Verify interchangeability with system specifications before substitution.
Key specifications for 11685: Part Name Assigned by Controlling Agency: O-RING,ADAPTER,INNER; End Item Identification: MODEL 241 3 FRAME PLUNGER PUMP; Material: RUBBER FLUOROCARBON CLASS FPM. 1 specification is documented in the U.S. Government catalog.
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.