The Ring,piston, cataloged under National Stock Number 2805-01-065-8433, 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 Sargent Aerospace & Defense, Llc Dba Airtomic Div Sargent. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 2805-01-065-8433 |
| Primary Part Number | AGA-11540 |
| Item Name | Ring,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Sargent Aerospace & Defense, Llc Dba Airtomic Div Sargent |
| Status | ACTIVE |
| Material Document and Classification | AMS 7329 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | VERTICAL JOINT |
| Oil Passage Type and Quantity | 1 GROOVE OUTSIDE PERIPHERY |
| Radial Wall Thickness | 0.1040 INCHES NOMINAL IN |
| Ring Style | CONCENTRIC |
| Material | COPPER ALLOY 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 |
|---|---|
| AGA-11540 PRIMARY | Sargent Aerospace & Defense, Llc Dba Airtomic Div Sargent (USA) |
| Reference | Meaning |
|---|---|
| 25398 | 5/9 Secondary reference Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division |
| 25398 | 5/9 Secondary reference Kaydon Ring & Seal Inc Dba Skf Precision Technologies |
NSN 2805-01-065-8433 is a Ring,piston, manufactured by Sargent Aerospace & Defense, Llc Dba Airtomic Div Sargent, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-01-065-8433 has 1 manufacturer part number on file: AGA-11540 (Sargent Aerospace & Defense, Llc Dba Airtomic Div Sargent).
Key specifications for AGA-11540: Overall Width: 0.0760 INCHES MINIMUM AND 0.0860 INCHES MAXIMUM IN; Material Document and Classification: AMS 7329 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Joint Style: VERTICAL JOINT. 7 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.