PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

42523Ring Set,piston

Morris Material Handling, Inc. · NSN 2815-00-785-1905 · FSC 2815 · No Item Name Available
Verified by PartsTable
NSN 2815-00-785-1905 — this item is cataloged by the U.S. Government under National Stock Number 2815-00-785-1905. Primary manufacturer part number: 42523.
Features
  • Ring Set,piston — FSC 2815
  • Standard Bore Diameter: 4.500 INCHES IN
  • Piston Accommodation Quantity: 1
  • Ring Set Component Parts: TOP RING RING,COMPRESSION 1;2ND THRU 5TH RING,COMPRESSION 4;BOTTOM RING RING
  • 2 verified cross-references
  • Primary manufacturer: Morris Material Handling, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ring Set,piston, cataloged under National Stock Number 2815-00-785-1905, is classified within Federal Supply Class 2815 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Morris Material Handling, Inc.. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2815-00-785-1905
Primary Part Number42523
Item NameRing Set,piston
FSC / FSG2815 / 28 — No Item Name Available
ManufacturerMorris Material Handling, Inc.
StatusACTIVE
Standard Bore Diameter4.500 INCHES IN
Piston Accommodation Quantity1
Ring Set Component PartsTOP RING RING,COMPRESSION 1;2ND THRU 5TH RING,COMPRESSION 4;BOTTOM RING RING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
2815-00-585-517942523 INTERCHANGEABLE
Ring Set,piston
Napco International Llc Dba Napco International Inc
5998-00-816-55344252-3 INTERCHANGEABLE
Electronic Components Assembly
General Microwave Corporation Div Kratos Microwave Electronics
5950-01-057-0523986215-2B INTERCHANGEABLE
Transformer,power
Raytheon Company Dba Raytheon
6680-01-229-494242523 INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
2510-01-633-492942523-1 INTERCHANGEABLE
Weldment Lockdown
Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service
2510-01-633-493742523-2 INTERCHANGEABLE
Weldment Lockdown
Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service
Cross-Reference Index
Part NumberManufacturer
42523 PRIMARY Morris Material Handling, Inc. (USA)
5855179 PRIMARY Napco International Llc Dba Napco International Inc (USA)
Related Parts
2815-00-585-5179INTERCHANGEABLE
RING SET,PISTON
42523
5998-00-816-5534INTERCHANGEABLE
ELECTRONIC COMPONENTS ASSEMBLY
4252-3
5950-01-057-0523INTERCHANGEABLE
TRANSFORMER,POWER
986215-2B
6680-01-229-4942INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
42523
2510-01-633-4929INTERCHANGEABLE
WELDMENT LOCKDOWN
42523-1
2510-01-633-4937INTERCHANGEABLE
WELDMENT LOCKDOWN
42523-2

Frequently Asked Questions

What is NSN 2815-00-785-1905?

NSN 2815-00-785-1905 is a Ring Set,piston, manufactured by Morris Material Handling, Inc., classified under FSC 2815 (No Item Name Available). Status: active.

What are the part numbers for NSN 2815-00-785-1905?

NSN 2815-00-785-1905 has 2 cross-referenced part numbers: 42523 (Morris Material Handling, Inc.), 5855179 (Napco International Llc Dba Napco International Inc).

What NSN replaces 2815-00-785-1905?

There are 6 known substitutes for 2815-00-785-1905: 2815-00-585-5179, 5998-00-816-5534, 5950-01-057-0523 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 42523?

Key specifications for 42523: Standard Bore Diameter: 4.500 INCHES IN; Piston Accommodation Quantity: 1; Ring Set Component Parts: TOP RING RING,COMPRESSION 1;2ND THRU 5TH RING,COMPRESSION 4;BOTTOM RING RING. 3 total characteristics are documented in the Federal Logistics Information System.

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