The O-Ring, cataloged under National Stock Number 5331-01-273-9935, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is The Entwistle Company Llc. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | The Entwistle Company Llc (CAGE 20722); General Electric Company (CAGE 01289) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-273-9935 |
| Primary Part Number | KT-RFE-5311-3-323144 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | The Entwistle Company Llc |
| 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 |
|---|---|
| KT-RFE-5311-3-323144 PRIMARY | The Entwistle Company Llc (USA) |
| 1102G68-002B | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| KT-RFE-5311-3-323144 | 5/9 Secondary reference Entwistle Co the Kenett Hydraulic Systems Div |
| KT-RFE-5311-3-3 03144 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5331-01-273-9935 is a O-Ring, manufactured by The Entwistle Company Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-273-9935 has 2 manufacturer part numbers on file: KT-RFE-5311-3-323144 (The Entwistle Company Llc), 1102G68-002B (General Electric Company).
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.