Rotary lip seal is used in various applications where the ... austenitic steel shafts and dry turned and ground carburized steel shafts in the radial shaft seal ring system. Wear 2015; 328: 123–131.

Apex seals in a Wankel rotary engine perform a similar function as piston rings in internal combustion ... As the rotor spins on the engine's eccentric shaft, each of the triangle's three apexes ...