поршневе кільце
circumferentially compressible piston ring
compound piston ring
face of piston ring
hammered piston ring
inside beveled piston ring
inverted beveled piston ring
compression piston ring
oil control piston ring
oil scraper piston ring
gummed-up piston ring
base junction; rotary collector ring (box); rotary base junction (of a tank); rotary connection; slip ring; traverse rotary base junction
life ring (ring buoy)
gas piston
piston
piston pin
short piston travel
recuperator piston
recuperator-piston rod
recuperator-piston rod nut
replenisher piston head
bearing piston pin
bottom rib of piston
counteracting piston type buffer
distributor piston
U slot of piston
vacuum piston
valve piston
valve-in-piston
varnish on the piston
ejection piston
head of piston
full-floating piston pin