PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40414Ring,piston

Dover Resources Inc Dba C. Lee Cook Div · NSN 4310-01-020-8345 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-01-020-8345 — this item is cataloged by the U.S. Government under National Stock Number 4310-01-020-8345. Primary manufacturer part number: 40414.
Features
  • Ring,piston — FSC 4310
  • 6 verified cross-references
  • Primary manufacturer: Dover Resources Inc Dba C. Lee Cook Div
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Ring,piston, cataloged under National Stock Number 4310-01-020-8345, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Dover Resources Inc Dba C. Lee Cook Div. This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 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)
ManufacturersDover Resources Inc Dba C. Lee Cook Div (CAGE 60251); Dresser-Rand Co Worthington Compressor Opn a Joint Venture (CAGE 93236); Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (CAGE 8FGX3); Sargent Aerospace & Defense, Llc Dba Airtomic Div Sargent (CAGE 71687); Kaydon Ring & Seal Inc Dba Skf Precision Technologies (CAGE 75370)
Technical Specifications
ParameterValue
NSN4310-01-020-8345
Primary Part Number40414
Item NameRing,piston
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerDover Resources Inc Dba C. Lee Cook Div
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5360-00-104-5133 INTERCHANGEABLE
Spring,helical,extension
3020-00-197-507240414 INTERCHANGEABLE
Gear,spur
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
4730-00-453-1169838-51 INTERCHANGEABLE
Plug Pipe
Rolls-Royce Controls and Data Services Limited
5136-00-517-554393851 INTERCHANGEABLE
Chasers,thread Cutting
Curtis-Toledo, Inc.
2530-00-709-955907-858233 INTERCHANGEABLE
Line
Tvh Parts Co.
5935-00-851-065783-851 INTERCHANGEABLE
Connector,plug,electrical
Amphenol Corporation Div Amphenol Rf
5950-01-015-7485662-0372-010 INTERCHANGEABLE
Transformer,power
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
6515-01-451-1353404-14 INTERCHANGEABLE
Screw,bone
Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
5995-01-582-796040414 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Cables to Go
2530-01-666-99088385-1 INTERCHANGEABLE
Valve,relay,air Pressure
Tru-Hitch, Inc.
Cross-Reference Index
Part NumberManufacturer
40414 Dover Resources Inc Dba C. Lee Cook Div (USA)
RNG1964 Dresser-Rand Co Worthington Compressor Opn a Joint Venture (USA)
RNG1964 Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA)
40414 Sargent Aerospace & Defense, Llc Dba Airtomic Div Sargent (USA)
83851 Kaydon Ring & Seal Inc Dba Skf Precision Technologies (USA)
RNG1964 Siemens Energy, Inc. Dba Dresser-Rand (USA)
Related Parts
5360-00-104-5133INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
3020-00-197-5072INTERCHANGEABLE
GEAR,SPUR
40414
4730-00-453-1169INTERCHANGEABLE
PLUG PIPE
838-51
5136-00-517-5543INTERCHANGEABLE
CHASERS,THREAD CUTTING
93851
2530-00-709-9559INTERCHANGEABLE
LINE
07-858233
5935-00-851-0657INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
83-851
5950-01-015-7485INTERCHANGEABLE
TRANSFORMER,POWER
662-0372-010
6515-01-451-1353INTERCHANGEABLE
SCREW,BONE
404-14
5995-01-582-7960INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
40414
2530-01-666-9908INTERCHANGEABLE
VALVE,RELAY,AIR PRESSURE
8385-1

Frequently Asked Questions

What is NSN 4310-01-020-8345?

NSN 4310-01-020-8345 is a Ring,piston, manufactured by Dover Resources Inc Dba C. Lee Cook Div, classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-01-020-8345?

NSN 4310-01-020-8345 has 6 cross-referenced part numbers: 40414 (Dover Resources Inc Dba C. Lee Cook Div), RNG1964 (Dresser-Rand Co Worthington Compressor Opn a Joint Venture), RNG1964 (Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions), 40414 (Sargent Aerospace & Defense, Llc Dba Airtomic Div Sargent), 83851 (Kaydon Ring & Seal Inc Dba Skf Precision Technologies) and 1 more.

What NSN replaces 4310-01-020-8345?

There are 10 known substitutes for 4310-01-020-8345: 5360-00-104-5133, 3020-00-197-5072, 4730-00-453-1169 and 7 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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