annular ring shank nailbalk ringbaulk ringbevel ring gearblocking ringchrome piston ringchrome ringcompression ringdifferential ring gearDykes ringexpander ringfulcrum ringhog ringkeystone piston ringoil control ringoil ringO-ringpacking ringpiston ringretainingretaining clipretaining deviceretaining springretaining wallringring boltring gaugering gearring groovering latencyring shank nailring spannerring topologyscraper ringsealing ringslip ringsnap ringsynchronizer ring