The O-Ring, cataloged under National Stock Number 5331-01-441-2218, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Thermo Electron Scientific Instruments Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-441-2218 |
| Primary Part Number | 078-721100 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Thermo Electron Scientific Instruments Llc |
| 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 |
|---|---|
| 078-721100 PRIMARY | Thermo Electron Scientific Instruments Llc (USA) |
| Reference | Meaning |
|---|---|
| 078-721100 | 5/9 Secondary reference Thermo Opteck |
NSN 5331-01-441-2218 is a O-Ring, manufactured by Thermo Electron Scientific Instruments Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-441-2218 has 1 manufacturer part number on file: 078-721100 (Thermo Electron Scientific Instruments Llc).
Key specifications for 078-721100: End Item Identification: USED ON GAS ANALYZER FOR SUPPORT EQUIPMENT. 0 specifications are 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.