The Ring,piston, cataloged under National Stock Number 2805-00-375-9263, 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 Dresser, Llc. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-375-9263 |
| Primary Part Number | 121705-1 |
| Item Name | Ring,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Dresser, Llc |
| Status | ACTIVE |
| Bore Diameter Oversize | 0.010 INCHES IN |
| Cross-Sectional Shape Style | TAPERED FACE |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.1150 INCHES NOMINAL IN |
| Ring Style | CONCENTRIC |
| Surface Treatment | PHOSPHATE MANGANESE OVERALL |
| 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 |
|---|---|
| 121705-1 PRIMARY | Dresser, Llc (USA) |
NSN 2805-00-375-9263 is a Ring,piston, manufactured by Dresser, Llc, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-375-9263 has 1 manufacturer part number on file: 121705-1 (Dresser, Llc).
Key specifications for 121705-1: Bore Diameter Oversize: 0.010 INCHES IN; Overall Width: 0.1235 INCHES MINIMUM AND 0.1240 INCHES MAXIMUM IN; Cross-Sectional Shape Style: TAPERED FACE; 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.