The O-Ring, cataloged under National Stock Number 5331-01-666-0438, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Southern Rubber Company Incorporated. Government technical data includes 4 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 | 5331-01-666-0438 |
| Primary Part Number | S0383 A3337-003 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Southern Rubber Company Incorporated |
| Status | ACTIVE |
| Temp Rating | 175.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF |
| Outside Diameter | 2.625 INCHES NOMINAL IN |
| Center Hole Diameter | 1.989 INCHES NOMINAL IN |
| Material | RUBBER SILICONE CLASS Q |
| 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 |
|---|---|
| S0383 A3337-003 PRIMARY | Southern Rubber Company Incorporated (USA) |
NSN 5331-01-666-0438 is a O-Ring, manufactured by Southern Rubber Company Incorporated, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-666-0438 has 1 manufacturer part number on file: S0383 A3337-003 (Southern Rubber Company Incorporated).
Key specifications for S0383 A3337-003: Temp Rating: 175.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF; Outside Diameter: 2.625 INCHES NOMINAL IN; Center Hole Diameter: 1.989 INCHES NOMINAL IN; Material: RUBBER SILICONE CLASS Q. 4 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.