TK 306-133 bearing housing and labyrinth seal 1.low eccentricity 2.precise measurement 3.dustproof 4.waterproof ... iron oxidation Easy to weld,coat and paint oil.TK 306-133 bearing housing and labyrinth seal Housing Description:(1). Bearing: 6306(2 ... , Port,Power, Forest, Construction, Recycling, Shipping loading etc. bearing housing and labyrinth seal