The O-Ring, cataloged under National Stock Number 5331-01-392-4121, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Moog Military Aircraft Llc. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-392-4121 |
| Primary Part Number | A25163-017-020 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Moog Military Aircraft Llc |
| Status | ACTIVE |
| Cross-Sectional Height | 2.0 MILLIMETERS NOMINAL MM |
| Hardness Rating | 85.0 SHORE DUROMETER A NOMINAL |
| Center Hole Diameter | 17.2 MILLIMETERS NOMINAL MM |
| Material | RUBBER FLUOROCARBON CLASS FPM |
| 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 |
|---|---|
| A25163-017-020 PRIMARY | Moog Military Aircraft Llc (USA) |
| Reference | Meaning |
|---|---|
| D631Z558A FIND 53 | 5/9 Secondary reference U.S. Government activity |
| A25163-017-020 | 5/9 Secondary reference U.S. Government activity |
| D631Z556A FIND NO 53 | 5/9 Secondary reference U.S. Government activity |
| D631Z557A FIND 53 | 5/9 Secondary reference U.S. Government activity |
NSN 5331-01-392-4121 is a O-Ring, manufactured by Moog Military Aircraft Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-392-4121 has 1 manufacturer part number on file: A25163-017-020 (Moog Military Aircraft Llc).
Key specifications for A25163-017-020: Cross-Sectional Height: 2.0 MILLIMETERS NOMINAL MM; Hardness Rating: 85.0 SHORE DUROMETER A NOMINAL; Center Hole Diameter: 17.2 MILLIMETERS NOMINAL MM; Material: RUBBER FLUOROCARBON CLASS FPM. 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.