The O-Ring, cataloged under National Stock Number 5331-01-620-7133, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Brennan Industries. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-620-7133 |
| Primary Part Number | FS4000-12 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Brennan Industries |
| Status | ACTIVE |
| Cross-Sectional Height | 0.750 INCHES NOMINAL IN |
| Center Hole Diameter | 0.739 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE NITRILE |
| 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 |
|---|---|
| FS4000-12 PRIMARY | Brennan Industries (USA) |
NSN 5331-01-620-7133 is a O-Ring, manufactured by Brennan Industries, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-620-7133 has 1 manufacturer part number on file: FS4000-12 (Brennan Industries).
Key specifications for FS4000-12: Cross-Sectional Height: 0.750 INCHES NOMINAL IN; Center Hole Diameter: 0.739 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: 12 BUNA N O-RING; Material: RUBBER BUTADIENE NITRILE. 3 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.