The O-Ring, cataloged under National Stock Number 5331-01-690-3745, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Brennan Industries of Texas 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5331-01-690-3745 |
| Primary Part Number | MB-FB-12-12 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Brennan Industries of Texas 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 |
|---|---|
| MB-FB-12-12 PRIMARY | Brennan Industries of Texas Inc (USA) |
| Reference | Meaning |
|---|---|
| MB-FB-12-12 | 5/9 Secondary reference Hydraulic Controls, Inc. |
NSN 5331-01-690-3745 is a O-Ring, manufactured by Brennan Industries of Texas Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-690-3745 has 1 manufacturer part number on file: MB-FB-12-12 (Brennan Industries of Texas Inc).
Key specifications for MB-FB-12-12: Part Name Assigned by Controlling Agency: BOSS,O-RING,UNION. 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.