They're slim rings of metal that hug the outer edge of the piston, responsible for sealing the combustion pressure inside the cylinder and keeping oil out of the combustion chamber. The science ...

Damaged or leaking piston rings can lead to hot exhaust escaping the cylinder and entering the crankcase of the engine, contaminating the engine oil and causing carbon to build up on the pistons. This ...

Oil and Grease Seals - Oil and grease seals have a flexible ... This category includes piston seals, rod seals, U-cups, and flange packages. Piston ring - Piston rings are metallic piston rings used ...