The O-Ring, cataloged under National Stock Number 5331-01-616-3178, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is The Entwistle Company Llc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-616-3178 |
| Primary Part Number | KT-5065-126 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | The Entwistle Company Llc |
| Status | ACTIVE |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| KT-5065-126 PRIMARY | The Entwistle Company Llc (USA) |
| KT-5065-13 ITEM NO 55 | The Entwistle Company Llc (USA) |
NSN 5331-01-616-3178 is a O-Ring, manufactured by The Entwistle Company Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-616-3178 has 2 manufacturer part numbers on file: KT-5065-126 (The Entwistle Company Llc), KT-5065-13 ITEM NO 55 (The Entwistle Company Llc).
Key specifications for KT-5065-126: Special Features: SIZE 2-237; End Item Identification: LUBE OIL ASSEMBLY; Material: RUBBER SYNTHETIC. 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.