annular ring shank nailbaulk ringbevel ring gearblocking ringchrome piston ringchrome ringcompression ringdifferential ring gearDykes ringexpander ringfulcrum ringhog ringkeystone piston ringoil control ringoil ringO-ringpacking ringpiston ringretaining ringringring boltring gaugering gearring groovering latencyring shank nailring spannerring topologyscraper ringsealing ringslip ringsnap ringsynchronizer ring