The O-Ring, cataloged under National Stock Number 5331-01-078-5123, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Airmotive Carburetor. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-078-5123 |
| Primary Part Number | 317S18 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Airmotive Carburetor |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Center Hole Diameter | 0.915 INCHES MINIMUM AND 0.927 INCHES MAXIMUM IN |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| 317S18 PRIMARY | Airmotive Carburetor (USA) |
| Reference | Meaning |
|---|---|
| 317S18 | 5/9 Secondary reference Honeywell International Inc Div Aerospace-South Bend (bendix Dr) |
NSN 5331-01-078-5123 is a O-Ring, manufactured by Airmotive Carburetor, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-078-5123 has 1 manufacturer part number on file: 317S18 (Airmotive Carburetor).
Key specifications for 317S18: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Center Hole Diameter: 0.915 INCHES MINIMUM AND 0.927 INCHES MAXIMUM IN; Material: RUBBER SYNTHETIC. 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.