The Ring,piston, cataloged under National Stock Number 4310-00-173-5270, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4310-00-173-5270 |
| Primary Part Number | 25B |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — No Item Name Available |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| Status | CANCELLED |
| Joint Style | VERTICAL JOINT |
| Material | IRON OVERALL |
| Standard Bore Diameter | 5.000 INCHES IN |
| Radial Wall Thickness | 0.1600 INCHES MINIMUM AND 0.1750 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Cross-Sectional Shape Style | BEVELED FACE SCRAPER, VENTILATED OIL CONTROL |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 107672PC275 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA) |
| 25B | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 107772PC275 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA) |
| 25B PRIMARY | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA) |
| 25B | Siemens Energy, Inc. Dba Dresser-Rand (USA) |
| 114972PC275 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA) |
| 25B | Dresser-Rand Co Worthington Compressor Opn a Joint Venture (USA) |
NSN 4310-00-173-5270 is a Ring,piston, manufactured by Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions, classified under FSC 4310 (No Item Name Available). Status: cancelled.
NSN 4310-00-173-5270 has 7 cross-referenced part numbers: 107672PC275 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), 25B (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 107772PC275 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), 25B (Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions), 25B (Siemens Energy, Inc. Dba Dresser-Rand) and 2 more.
There are 9 known substitutes for 4310-00-173-5270: 6685-00-063-9722, 5940-00-237-8867, 6625-00-610-5791 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for 25B: Joint Style: VERTICAL JOINT; Material: IRON OVERALL; Standard Bore Diameter: 5.000 INCHES IN; Radial Wall Thickness: 0.1600 INCHES MINIMUM AND 0.1750 INCHES MAXIMUM IN. 7 total characteristics are documented in the Federal Logistics Information System.
NSN 4310-00-173-5270 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.