piston ring Definition

exhaust system, planetary gear, vacuum pump, milling machine, fuel injection, traction engine, fuel injection system, amphibious vehicle, recreational vehicle, sliding door, roller bearing, circular saw, scag, cometic, locomobile, tricked out, disc brake, engine block, structural steel, roof rack, crankshaft, vintage car, gasket, ladder truck, piston, tough luck, machine shop, sodbusters, heating pad, floor lamp, timberjack, reciprocating saw, aerolite, malleable iron, laundry basket, shovelhead, flying colors, camshaft, covered wagon, carbon fibre, subcompact car, radial engine, fibreglass, exhaust manifold, pneu, tail gate, stillen, twist drill, lighting fixture, machine tool, kadett, natrium, loadstar, cutting tool, proving ground, wire cloth, seat cushion, chain saw, torpedo boat, repair shop, bugeye, cylinder, composite material, mtis, propulsion system, lumma, drophead, parts catalog, full bore, surface ship, permanent magnet, grinding wheel, amg, excaliber, o ring, stanley steamer, beer bottle, tool chest, motorised, draught beer, enzed, steam engine, pile driver, aerodyne, studebaker, ventilation system, butter churn, authentics, solid rocket, ctrs, bernina, gtos, propeller shaft, armoured vehicle, alternating current, pedata, offset printing, mouldings, blow moulding, step stool,