Piston rings since 1973. Wire and cast-iron stock, heat treatment, surface finishing, precision grinding and assembly all run in-house, under an IATF 16949 quality management system that governs process control through final verification. Below: our process capability and our piston-ring technical library.
High-grade Japanese imported wire and cast-iron stock, for wear resistance and durability.
Sets the ring’s elasticity and hardness — what decides whether it holds tension over its service life.
Chrome plating, nitriding, phosphating, ferroxiding — and our own Diamond-Like Carbon (DLC) coating.
High-precision grinding holds dimensions consistent; final verification follows IATF 16949.
All four stages run inside our own plant — none are outsourced.
What a piston ring does inside an engine, which rings make up a set, and how the four functions divide between them.
Piston rings seal and control oil in an engine. This guide covers a piston ring's composition (two compression rings + one oil ring), the three ring…
Animated walkthrough of an inline-four engine: the four-stroke cycle, the 180° crankshaft and 1-3-4-2 firing order, two-stroke vs four-stroke, cylind…
The core of our process. Material choice and coating decide wear resistance, friction and service life.
The choice of piston-ring material directly affects engine performance and lifespan. This guide compares the three common materials — steel (304H), c…
A piston ring's surface treatment determines its wear resistance, sealing and corrosion protection. This guide covers chrome plating, nitriding, phos…
Facing EU environmental limits on traditional plating, C.T.I. breaks through with a near-diamond Diamond-Like Carbon (DLC) coating — high hardness, l…
How to choose a cross-section, and how the joint and end gap govern sealing.
A piston ring's cross-sectional shape determines its sealing, oil-scraping and heat dissipation. This guide explains rectangular, taper-faced, barrel…
Piston ring end gap is the small gap between the ring ends once fitted in the bore — room for thermal expansion. Too small and the ends butt when hot…
For the workshop: correct installation order, reading the wear symptoms, and where carbon deposits come from.
Seven installation steps each for petrol and diesel engines, with an animated diagram and the C.T.I. ring section reference.
Blue smoke, high oil consumption and power loss can all point to worn piston rings. Learn the common symptoms, the five main causes, and how to test…
The five root causes of engine carbon deposits, their symptoms and how to remove them — plus how electrical stability and a piston ring’s sealing, oi…
