The O-Ring, cataloged under National Stock Number 5331-01-111-9278, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Honeywell International Inc. Div Aerospace - Torrance. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Honeywell International Inc. Div Aerospace - Torrance (CAGE 70210); Proponent, Inc. Dba Proponent (CAGE 59789) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-111-9278 |
| Primary Part Number | S9029B903 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| 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 |
|---|---|
| S9029B903 PRIMARY | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| S9029B903 | Proponent, Inc. Dba Proponent (USA) |
| Reference | Meaning |
|---|---|
| S9029F903 | C/1 Advisory reference — outside the item-of-supply concept Honeywell International Inc. Div Aerospace - Torrance |
NSN 5331-01-111-9278 is a O-Ring, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-111-9278 has 2 manufacturer part numbers on file: S9029B903 (Honeywell International Inc. Div Aerospace - Torrance), S9029B903 (Proponent, Inc. Dba Proponent).
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.