The Ring,piston, cataloged under National Stock Number 2805-00-255-9099, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Carrier Corp. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-255-9099 |
| Primary Part Number | 17-10518-00 |
| Item Name | Ring,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Carrier Corp |
| Status | ACTIVE |
| FSC Application Data | REFRIGERATION COMPRESSOR |
| Cross-Sectional Shape Style | STRAIGHT FACE, DOUBLE SCRAPER, VENTILATED OIL CONTROL |
| Joint Style | VERTICAL JOINT |
| Oil Passage Type and Quantity | 8 SLOT HORIZONTALLY THROUGH RING |
| Radial Wall Thickness | 0.1100 INCHES MINIMUM AND 0.1150 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 2.500 INCHES IN |
| Material | IRON OVERALL |
| 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 |
|---|---|
| 17-10518-00 PRIMARY | Carrier Corp (USA) |
| Reference | Meaning |
|---|---|
| 5F20-1091 | 5/9 Secondary reference Carrier Corp |
| 5F20-1091-10855 | 5/9 Secondary reference Demarkus Corp Refrigeration Engineering Corp |
NSN 2805-00-255-9099 is a Ring,piston, manufactured by Carrier Corp, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-255-9099 has 1 manufacturer part number on file: 17-10518-00 (Carrier Corp).
Key specifications for 17-10518-00: FSC Application Data: REFRIGERATION COMPRESSOR; Overall Width: 0.1550 INCHES NOMINAL IN; Cross-Sectional Shape Style: STRAIGHT FACE, DOUBLE SCRAPER, VENTILATED OIL CONTROL; Joint Style: VERTICAL JOINT. 8 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.