The O-Ring, cataloged under National Stock Number 5331-01-143-8203, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Brooks Instrument Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | Brooks Instrument Llc (CAGE 4ZW64) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-143-8203 |
| Primary Part Number | F-375-B-005-SUA |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Brooks Instrument 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 |
|---|---|
| F-375-B-005-SUA PRIMARY | Brooks Instrument Llc (USA) |
| Reference | Meaning |
|---|---|
| F-375-B-005-SUA | 3/9 Design control — primary reference U.S. Government activity |
| DS-1320 ITEM 9 | 5/9 Secondary reference U.S. Government activity |
| F-375-B-005-SU5 | 5/9 Secondary reference U.S. Government activity |
NSN 5331-01-143-8203 is a O-Ring, manufactured by Brooks Instrument Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-143-8203 has 1 manufacturer part number on file: F-375-B-005-SUA (Brooks Instrument Llc).
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.