a rod or bar in an engine that connects a piston to a crosshead

A ring or seal that fits around a piston, sealing between the piston and the bore in which it slides.

Any of several types of engine having cylinders containing reciprocating pistons, in which a crankshaft is turned by pistons moving up and down within cylinders.

plural of piston rod

plural of piston ring

In a single-acting engine, an elongated hollow piston, open at the end, in which the end of the connecting rod is pivoted. The piston rod, crosshead and stuffing box are thus dispensed with.

A valve which uses a hollow or double piston sliding in a cylinder to direct fluid along one of two paths

plural of trunk piston

Pertaining to the opposed-piston engine / opposed-cylinder engine

Resembling or characteristic of a piston.