PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18-188Ring,piston

Dresser Industries Inc Leroi Div · NSN 2805-00-273-0393 · FSC 2805 · No Item Name Available
Verified by PartsTable
NSN 2805-00-273-0393 — this item is cataloged by the U.S. Government under National Stock Number 2805-00-273-0393. Primary manufacturer part number: 18-188.
Features
  • Ring,piston — FSC 2805
  • Material: IRON OVERALL
  • Ring Style: CONCENTRIC
  • Radial Wall Thickness: 0.1600 INCHES NOMINAL IN
  • Joint Style: VERTICAL JOINT
  • Standard Bore Diameter: 4.000 INCHES IN
  • Cross-Sectional Shape Style: STRAIGHT FACE, BOTTOM RELIEF
  • FSC Application Data: GASOLINE ENGINE,NONAIRCRAFT
Applications
  • Applications requiring Iron Overall construction
General Description

The Ring,piston, cataloged under National Stock Number 2805-00-273-0393, is classified within Federal Supply Class 2805 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Dresser Industries Inc Leroi Div. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2805-00-273-0393
Primary Part Number18-188
Item NameRing,piston
FSC / FSG2805 / 28 — No Item Name Available
ManufacturerDresser Industries Inc Leroi Div
StatusCANCELLED
MaterialIRON OVERALL
Ring StyleCONCENTRIC
Radial Wall Thickness0.1600 INCHES NOMINAL IN
Joint StyleVERTICAL JOINT
Standard Bore Diameter4.000 INCHES IN
Cross-Sectional Shape StyleSTRAIGHT FACE, BOTTOM RELIEF
FSC Application DataGASOLINE ENGINE,NONAIRCRAFT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
2805-00-210-5215 INTERCHANGEABLE
Body,oil Relief Valve
5330-00-737-287218188 INTERCHANGEABLE
Gasket
Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products
5930-01-167-182510513139 INTERCHANGEABLE
Switch,sensitive
General Dynamics Land Systems Canadacorp
5950-01-175-5108 INTERCHANGEABLE
Transformer,power
Cross-Reference Index
Part NumberManufacturer
18-188 PRIMARY Dresser Industries Inc Leroi Div (USA)
Related Parts
2805-00-210-5215INTERCHANGEABLE
BODY,OIL RELIEF VALVE
5330-00-737-2872INTERCHANGEABLE
GASKET
18188
5930-01-167-1825INTERCHANGEABLE
SWITCH,SENSITIVE
10513139
5950-01-175-5108INTERCHANGEABLE
TRANSFORMER,POWER

Frequently Asked Questions

What is NSN 2805-00-273-0393?

NSN 2805-00-273-0393 is a Ring,piston, manufactured by Dresser Industries Inc Leroi Div, classified under FSC 2805 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2805-00-273-0393?

NSN 2805-00-273-0393 has 1 cross-referenced part number: 18-188 (Dresser Industries Inc Leroi Div).

What NSN replaces 2805-00-273-0393?

There are 4 known substitutes for 2805-00-273-0393: 2805-00-210-5215, 5330-00-737-2872, 5930-01-167-1825 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18-188?

Key specifications for 18-188: Material: IRON OVERALL; Ring Style: CONCENTRIC; Radial Wall Thickness: 0.1600 INCHES NOMINAL IN; Joint Style: VERTICAL JOINT. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2805-00-273-0393 still in active supply?

NSN 2805-00-273-0393 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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