PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

19772Ring,piston

Napco International Llc Dba Napco International Inc · NSN 2815-00-785-1898 · FSC 2815 · No Item Name Available
Verified by PartsTable
NSN 2815-00-785-1898 — this item is cataloged by the U.S. Government under National Stock Number 2815-00-785-1898. Primary manufacturer part number: 19772.
Features
  • Ring,piston — FSC 2815
  • Radial Wall Thickness: 0.1250 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Joint Style: VERTICAL JOINT
  • Ring Style: CONCENTRIC
  • Standard Bore Diameter: 4.500 INCHES IN
  • Cross-Sectional Shape Style: BEVELED FACE, SCRAPER, BOTTOM RELIEF
  • 2 verified cross-references
Applications
  • Applications requiring Steel Overall construction
General Description

The Ring,piston, cataloged under National Stock Number 2815-00-785-1898, is classified within Federal Supply Class 2815 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Napco International Llc Dba Napco International Inc. Government technical data includes 6 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
NSN2815-00-785-1898
Primary Part Number19772
Item NameRing,piston
FSC / FSG2815 / 28 — No Item Name Available
ManufacturerNapco International Llc Dba Napco International Inc
StatusACTIVE
Radial Wall Thickness0.1250 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Joint StyleVERTICAL JOINT
Ring StyleCONCENTRIC
Standard Bore Diameter4.500 INCHES IN
Cross-Sectional Shape StyleBEVELED FACE, SCRAPER, BOTTOM RELIEF
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5360-00-113-091819772 INTERCHANGEABLE
Spring,helical,compression
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
6635-00-204-3323 INTERCHANGEABLE
Bar,test
5360-00-252-846219772 INTERCHANGEABLE
Spring,helical,compression
Brinkley Technology Group Llc Dba Hercules Manufacturing
4820-00-721-9927 INTERCHANGEABLE
Valve,check
5940-01-082-46801977.2 INTERCHANGEABLE
Terminal,special
Weidmueller Terminations Inc
5998-01-326-034119772 INTERCHANGEABLE
Circuit Card Assembly
Datum Inc Bancomm-Timing Div
Cross-Reference Index
Part NumberManufacturer
19772 PRIMARY Napco International Llc Dba Napco International Inc (USA)
19772 Morris Material Handling, Inc. (USA)
Related Parts
5360-00-113-0918INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
19772
6635-00-204-3323INTERCHANGEABLE
BAR,TEST
5360-00-252-8462INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
19772
4820-00-721-9927INTERCHANGEABLE
VALVE,CHECK
5940-01-082-4680INTERCHANGEABLE
TERMINAL,SPECIAL
1977.2
5998-01-326-0341INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
19772

Frequently Asked Questions

What is NSN 2815-00-785-1898?

NSN 2815-00-785-1898 is a Ring,piston, manufactured by Napco International Llc Dba Napco International Inc, classified under FSC 2815 (No Item Name Available). Status: active.

What are the part numbers for NSN 2815-00-785-1898?

NSN 2815-00-785-1898 has 2 cross-referenced part numbers: 19772 (Napco International Llc Dba Napco International Inc), 19772 (Morris Material Handling, Inc.).

What NSN replaces 2815-00-785-1898?

There are 6 known substitutes for 2815-00-785-1898: 5360-00-113-0918, 6635-00-204-3323, 5360-00-252-8462 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 19772?

Key specifications for 19772: Radial Wall Thickness: 0.1250 INCHES NOMINAL IN; Material: STEEL OVERALL; Joint Style: VERTICAL JOINT; Ring Style: CONCENTRIC. 7 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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