The O-Ring, cataloged under National Stock Number 5331-01-697-2399, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is King Instrument Company, Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5331-01-697-2399 |
| Primary Part Number | OR221VT |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | King Instrument Company, Inc |
| 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 |
|---|---|
| OR221VT PRIMARY | King Instrument Company, Inc (USA) |
| Reference | Meaning |
|---|---|
| AS-7710-718/ REV B ITEM 6 | D/9 Drawing number reference only King Instrument Company, Inc |
NSN 5331-01-697-2399 is a O-Ring, manufactured by King Instrument Company, Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-697-2399 has 1 manufacturer part number on file: OR221VT (King Instrument Company, Inc).
Key specifications for OR221VT: Part Name Assigned by Controlling Agency: O-RING; End Item Identification: FLOWMETER, 10. 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.