The Ring Set,piston, cataloged under National Stock Number 2990-01-669-5472, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Ring Set,piston |
| FSC / FSG | 2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29) |
| Manufacturers | Naval Inventory Control Point Mechanicsburg (CAGE 03950) |
| Parameter | Value |
|---|---|
| NSN | 2990-01-669-5472 |
| Primary Part Number | XM18-C1791-24-1G OXYGEN CLEANCP |
| Item Name | Ring Set,piston |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| XM18-C1791-24-1G OXYGEN CLEANCP | Naval Inventory Control Point Mechanicsburg (USA) |
| 17493 ITEM 16CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| XM18-C1791-24-1G OXYGEN CLEAN | 3/1 Design control — primary reference Rix Industries |
| 17493 ITEM 16 | 5/1 Secondary reference Rix Industries |
NSN 2990-01-669-5472 is a Ring Set,piston, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-669-5472 has 2 manufacturer part numbers on file: XM18-C1791-24-1G OXYGEN CLEANCP (Naval Inventory Control Point Mechanicsburg), 17493 ITEM 16CP (Naval Inventory Control Point Mechanicsburg).
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.