The O-Ring, cataloged under National Stock Number 5331-01-314-1856, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Johnson Control Systems Ltd. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | Johnson Control Systems Ltd (CAGE K0460) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-314-1856 |
| Primary Part Number | R4081 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Johnson Control Systems Ltd |
| 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 |
|---|---|
| R4081 | Johnson Control Systems Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 10123 | 3/9 Design control — primary reference Ulstein Usa Inc |
| 10123 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5331-01-314-1856 is a O-Ring, manufactured by Johnson Control Systems Ltd, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-314-1856 has 1 manufacturer part number on file: R4081 (Johnson Control Systems Ltd).
1 possible match (shared part number, not a government interchangeability claim): 4310-01-425-6681. 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.