Rings

Piston Rings and Seal Rings for Automobiles, Motorcycles, Construction Machinery, Heavy Truck and Marine Applications

  • Steel and Cast Iron Engine Piston Rings
  • Cast Iron Seal Rings
  • Teflon Seal Rings
  • Piston Rings for Large Engines

Ring Technologies

Surface Treatment

  • Physical Vapor Deposition Technology
  • Composite Plating
  • High Velocity Oxygen Fuel Spraying
  • Plasma Spraying
  • Solid Lubricating Film
  • Gas Nitriding

Steel Ring

  • Steel Cam Forming
  • Double Angle Piston Ring
  • Gas Nitrided DVM
  • Narrow Type RIK-Vent

Ring Analysis

  • Ring Motion Behavior Analysis
  • Thermal Measurement Technology
  • Oil Film Thickness
  • Friction Force Measurement Under Running Conditions

Ring Organization

Total Number of Test Benches: 30

Technical Evaluation Equipment:

  • High Pressure Friction and Wear Test Machines
  • Dry Type Corrosion Wear Test Machines
  • Aluminum Adhesion Test Machines
  • Ring Fatigue Test Machines
  • Fatigue Test Machines for Surface Treatment
    (Hot and Normal Temperature)
  • Various Electronic Analysis Equipment

R&D
With a firm commitment to a better future for all, we conduct extensive research into the limitless possibilities of science. Our diverse research and development activities have now been integrated into one organization at our Kumagaya Research Center. We are also engaged in joint research projects with universities and other research organizations to create new technology.


Key to Special Features  Innovation
 Low Price  Improved Performance
 Compact & Lightweight  Environment Protection

Piston Ring

Product

Features

Application

Special Features for Rings

2-piece ring kit, component: 1 pc. of special fitting oil: 3 pcs. type
  • Reducing frictional loss of piston rings
  • Lightweight (by shortening piston making the block shorter)

Gasoline-fueled engines in general

Lightweight Piston Ring
  • Thinning width of piston ring reducing their frictional loss
  • Titanium piston ring and aluminum piston ring lightweight, high performance and blow-by reduction

Gasoline-fueled engines

Piston ring set for diesel engines
  • The top ring is a nitride steel ring coated with an ion plating film. This is used with a special cast iron second ring combined with a DVM oil ring. This gives excellent scuff-resistance and wear-resistance, and both oil consumption and durability are improved.

Diesel engines

 

Ion plating, Cr-N system and Ti-N system
  • Improving resistance to abrasion and
  • Improving resistance to scuffing.

Gasoline - and diesel-fueled engines,

Sleeve on the internal surface and

Parts sliding on aluminum

Composite dispersion plating (CPN-200) Ni-P-Co+Si3N4 system
  • Improving resistance to scuffing preventing initial scuffing
  • Abrasion resistance corrosion resistance

Gasoline - and diesel-fueled engines,

Sleeves on the internal surface

Parts sliding on aluminum

Neo Black piston (plated with ferrous material)
  • Preventing piston cart from scuffing

Gasoline-fueled engines and

Parts sliding on aluminum alloy

Non-electrolytically Plated Piston (plated with Ni-P material)
  • Preventing the top ring groove of pistons from wearing out

Aluminum alloy piston