oil ring

oil ring

[′ȯil ‚riŋ]
(mechanical engineering)
A ring located at the lower part of a piston to prevent an excess amount of oil from being drawn up onto the piston during the suction stroke.
A ring on a journal, dipping into an oil bath for lubrication.
References in periodicals archive ?
Today's engines have three piston rings C a top ring, second ring and oil ring.
US and European Union sanctions against Iran and the threat of a disruption in crude oil supply in the Strait of Hormuz - a narrow channel of waters between Iran and Oman where more than one-third of all global seaborne oil passes through - helped US crude oil ring in the new year this week by spiking to an eight-month high.
The MorrisKeyseater creates internal and external keyways, splines, gears, blind holes, oil ring grooves; tapered keyways, and step keys.
The recirculating oil ring pump replaces once-through water-sealed vacuum pumps to pull vacuum from extruder vents for enhancement of devolatilization efficiencies.
The recirculating oil ring pump is replacing once-through water sealed vacuum pumps to pull vacuum from extruder vents to enhance devolatilization efficiencies.
An oil ring installed upside down will "pump" oil up the cylinder and into the ports.
A furious Michael Schumacher stormed off after his Ferrari packed up after three laps with gearbox trouble when an oil ring broke.
Federal-Mogul's LKZ oil control ring is an innovative two-piece oil ring for diesel and direct-injection gasoline engines.
Federal-Mogul's LKZ oil control ring is an innovative two-piece oil ring for direct-injection gasoline engines, previously developed for demanding diesel applications.
The Franklin facility manufacturers stainless steel oil ring expanders for North American automotive original-equipment manufacturers, as well as the aftermarket.
The legendary Sealed Power SS-50 oil ring features electro-polished stainless steel expander-spacers to better resist corrosion, provide superior side- sealing and maintain original tension.
The facility supplies oil ring expanders and consolidates and packs piston ring sets for Nissan's Altima, and Frontier pickup truck.