PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18-318Ring,piston

Dresser Industries Inc Leroi Div · NSN 4310-00-118-8614 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-00-118-8614 — this item is cataloged by the U.S. Government under National Stock Number 4310-00-118-8614. Primary manufacturer part number: 18-318.
Features
  • Ring,piston — FSC 4310
  • Ring Style: CONCENTRIC
  • Standard Bore Diameter: 5.750 INCHES IN
  • Oil Passage Type and Quantity: 1 GROOVE OUTSIDE PERIPHERY
  • Oil Passage Type and Quantity: 10 SLOT HORIZONTALLY THROUGH RING
  • Material: IRON OVERALL
  • Cross-Sectional Shape Style: CONVEX FACE, DOUBLE SCRAPER, VENTILATED OIL CONTROL
  • Radial Wall Thickness: 0.2200 INCHES NOMINAL IN
Applications
  • Applications requiring Iron Overall construction
General Description

The Ring,piston, cataloged under National Stock Number 4310-00-118-8614, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Dresser Industries Inc Leroi Div. Government technical data includes 8 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4310-00-118-8614
Primary Part Number18-318
Item NameRing,piston
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerDresser Industries Inc Leroi Div
StatusACTIVE
Ring StyleCONCENTRIC
Standard Bore Diameter5.750 INCHES IN
Oil Passage Type and Quantity1 GROOVE OUTSIDE PERIPHERY
Oil Passage Type and Quantity10 SLOT HORIZONTALLY THROUGH RING
MaterialIRON OVERALL
Cross-Sectional Shape StyleCONVEX FACE, DOUBLE SCRAPER, VENTILATED OIL CONTROL
Radial Wall Thickness0.2200 INCHES NOMINAL IN
Joint StyleVERTICAL JOINT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5950-00-084-3417 INTERCHANGEABLE
Coil,radio Frequency
5120-00-250-2490398-7 INTERCHANGEABLE
Pot,melting
C. S. Osborne and Company Dba Cs Osborne & Co
4820-00-346-1774005-300-0139 INTERCHANGEABLE
Disk,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
5940-00-802-808618318 INTERCHANGEABLE
Ferrule,electrical Conductor
Ward Leonard Ct Llc
5950-01-029-5948PC76269-1 INTERCHANGEABLE
Reactor
Rockwell Collins, Inc. Dba Rc Displays Systems
5955-01-042-3790712746-8 INTERCHANGEABLE
Crystal Unit,quartz
Raytheon Company Div Rmd Strategic
5962-01-076-7967932821-35 INTERCHANGEABLE
Microcircuit,memory
Raytheon Company Dba Raytheon
3040-01-177-4598 INTERCHANGEABLE
Housing,mechanical Drive
5905-01-396-75700183180003 INTERCHANGEABLE
Resistor,fixed,film
Riimic, Llc Dba Sunair Electronics
6240-01-480-216318318 INTERCHANGEABLE
Lamp,fluorescent
Technical Consumer Products, Inc.
Cross-Reference Index
Part NumberManufacturer
18-318 PRIMARY Dresser Industries Inc Leroi Div (USA)
Related Parts
5950-00-084-3417INTERCHANGEABLE
COIL,RADIO FREQUENCY
5120-00-250-2490INTERCHANGEABLE
POT,MELTING
398-7
4820-00-346-1774INTERCHANGEABLE
DISK,VALVE
005-300-0139
5940-00-802-8086INTERCHANGEABLE
FERRULE,ELECTRICAL CONDUCTOR
18318
5950-01-029-5948INTERCHANGEABLE
REACTOR
PC76269-1
5955-01-042-3790INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
712746-8
5962-01-076-7967INTERCHANGEABLE
MICROCIRCUIT,MEMORY
932821-35
3040-01-177-4598INTERCHANGEABLE
HOUSING,MECHANICAL DRIVE
5905-01-396-7570INTERCHANGEABLE
RESISTOR,FIXED,FILM
0183180003
6240-01-480-2163INTERCHANGEABLE
LAMP,FLUORESCENT
18318
5133-01-535-8379INTERCHANGEABLE
DRILL,TWIST

Frequently Asked Questions

What is NSN 4310-00-118-8614?

NSN 4310-00-118-8614 is a Ring,piston, manufactured by Dresser Industries Inc Leroi Div, classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-00-118-8614?

NSN 4310-00-118-8614 has 1 cross-referenced part number: 18-318 (Dresser Industries Inc Leroi Div).

What NSN replaces 4310-00-118-8614?

There are 11 known substitutes for 4310-00-118-8614: 5950-00-084-3417, 5120-00-250-2490, 4820-00-346-1774 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18-318?

Key specifications for 18-318: Ring Style: CONCENTRIC; Standard Bore Diameter: 5.750 INCHES IN; Oil Passage Type and Quantity: 1 GROOVE OUTSIDE PERIPHERY; Oil Passage Type and Quantity: 10 SLOT HORIZONTALLY THROUGH RING. 9 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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