How do you use the word cylinder in a sentence?

Oxygen, Nitrogen and Argon are just three common gasses transported in a high pressure gas cylinder. Our hot water cylinder sprung a leak, we had to call out the emergency plumber to come and fix it. My car has a six cylinder petrol engine and a go faster stripe, its wicked. A barrel with piston rod for pushing and pulling using pressurized fluid is called a hydraulic cylinder