SYSTANE Lubricating Eye Ointment For Dry Eyes 3.5g Night Time Relief What is Grease in Engineering? Grease is a semi solid lubricant made from base oil, thickener, and performance additives. It is widely used in industrial machinery to reduce friction, prevent wear, and Bausch & Lomb Advanced Eye Relief Maximum Relief Lubricant Redness Reliever Eye Drops, .5 oz Blink Gel Tears Lubricating Dry Eye Drops 0.34 fl oz Dry Eye Drops, Gel, and Treatment Devices Alcon Petroleum jelly on your O rings? It can break down rubber and cause leaks. Stick with Permatex O Ring Lubricant designed to protect, seal, and extend O ring life. , #oring #mechanic #mechanictips