PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

87020Ring,piston

Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp · NSN 4310-00-128-0872 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-00-128-0872 — this item is cataloged by the U.S. Government under National Stock Number 4310-00-128-0872. Primary manufacturer part number: 87020.
Features
  • Ring,piston — FSC 4310
  • 1 verified cross-reference
  • Primary manufacturer: Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Ring,piston, cataloged under National Stock Number 4310-00-128-0872, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRing,piston
FSC / FSG4310 — No Item Name Available (FSG 43)
ManufacturersWestinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (CAGE 82722)
Technical Specifications
ParameterValue
NSN4310-00-128-0872
Primary Part Number87020
Item NameRing,piston
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerWestinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
6650-00-030-221887020 INTERCHANGEABLE
Spectrometer,prism
Central Scientific Co Educational
5905-00-606-951687020 INTERCHANGEABLE
Resistor,variable,wire Wound,pre
Cae Usa Inc.
5935-00-860-08228720 INTERCHANGEABLE
Socket,plug-in Electronic Compon
Jettron Products Inc
1650-01-043-25244100573-2 INTERCHANGEABLE
Piston Assembly,motor
Triumph Actuation Systems Llc Div Triumph Actuation Systems - Clemmons
4440-01-606-159140185 INTERCHANGEABLE
Drier,air-Gas,desiccant
Lloyd Industries, Incorporated Dba Bc Group International Inc
Cross-Reference Index
Part NumberManufacturer
87020 PRIMARY Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (USA)
Related Parts
6650-00-030-2218INTERCHANGEABLE
SPECTROMETER,PRISM
87020
5905-00-606-9516INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
87020
5935-00-860-0822INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
8720
1650-01-043-2524INTERCHANGEABLE
PISTON ASSEMBLY,MOTOR
4100573-2
4440-01-606-1591INTERCHANGEABLE
DRIER,AIR-GAS,DESICCANT
40185

Frequently Asked Questions

What is NSN 4310-00-128-0872?

NSN 4310-00-128-0872 is a Ring,piston, manufactured by Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp, classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-00-128-0872?

NSN 4310-00-128-0872 has 1 cross-referenced part number: 87020 (Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp).

What NSN replaces 4310-00-128-0872?

There are 5 known substitutes for 4310-00-128-0872: 6650-00-030-2218, 5905-00-606-9516, 5935-00-860-0822 and 2 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com