The Ring,piston, cataloged under National Stock Number 2805-00-339-2553, 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 Wildfire Pacific Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-339-2553 |
| Primary Part Number | 101PC25 |
| Item Name | Ring,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Wildfire Pacific Inc |
| Status | ACTIVE |
| Cross-Sectional Shape Style | STRAIGHT FACE, DOUBLE SCRAPER |
| Joint Style | VERTICAL JOINT |
| Oil Passage Type and Quantity | 1 GROOVE OUTSIDE PERIPHERY |
| Radial Wall Thickness | 0.0800 INCHES MINIMUM AND 0.0900 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 2.125 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 |
|---|---|
| 101PC25 PRIMARY | Wildfire Pacific Inc (USA) |
| 262772PC25 PRIMARY | Naval Sea Systems Command (USA) |
| 107PC25 PRIMARY | Wildfire Pacific Inc (USA) |
| Y33 PRIMARY | Wildfire Pacific Inc (USA) |
| Reference | Meaning |
|---|---|
| 262772PC25 | 5/9 Secondary reference U.S. Government activity |
| 262778PC25 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2805-00-339-2553 is a Ring,piston, manufactured by Wildfire Pacific Inc, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-339-2553 has 4 manufacturer part numbers on file: 101PC25 (Wildfire Pacific Inc), 262772PC25 (Naval Sea Systems Command), 107PC25 (Wildfire Pacific Inc), Y33 (Wildfire Pacific Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4730-00-354-6214, 4920-00-948-3906. Verify interchangeability with system specifications before substitution.
Key specifications for 101PC25: Overall Width: 0.1235 INCHES MINIMUM AND 0.1240 INCHES MAXIMUM IN; Cross-Sectional Shape Style: STRAIGHT FACE, DOUBLE SCRAPER; Joint Style: VERTICAL JOINT; Oil Passage Type and Quantity: 1 GROOVE OUTSIDE PERIPHERY. 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.