Wool Felt Plain 100% Pure Wool,For Mechanical,Electrical,Aviation Factory Manufacture Strong ... proof 7.1)Character:wear-resistance,dustproof,sound-insulation,quakeproof,seal,heat-insulation2)Use:mainly used for a vriety of mechanical ... machinery and hardware,can play the role of oil absorption,seal,dust-proof,damping.Keep the machine running,to extend the ...