This is the most common and simple joint among all types of piston ring joints.The cut is made at an angle to create higher resistance to leakage of the combustion gases.
The compression rings prevent leakage of gases in a combustion engine or leakage of pneumatic.hydraulic pressure in compressors hydraulic applications.
This has two contact lands which are narrow and thus a high unit pressure is achieved to control the oil lubrication.This has outside edges of both lands chamfered in the opposite direction to improve the oil scraping effect.
The oil control rings regulate engine oil consumption. They scrape the excess oil on the cylinder walls back to the sump through the gaps in the piston ring and the holes in the piston while retaining a very thin layer of oil from friction-free running of piston rings inside the cylinder.
Piston rings for hydraulic applications are many times made of sintered material for improved wear resistance and anti-friction properties esp. in dry condition.Piston rings can me made of other special materials also to suit the special application conditions.
Mayapuri, Delhi 