Felt-Ring Seal 100% Wool, For Mechanical, Electrical, Aviation Factory Manufacture Strong Oil-Absorbing & Dust Wool Felt ... quality is guaranteed. 6.About Wool Felt products :1)For mechanical,electrical,aviation 2)Density:0.09-0.8g/cm3 3 ... ,seal,heat-insulation2)Use:mainly used for a vriety of mechanical equipment,mechanicalproducts. textile,chemical,electronics,electric power tools,as a ...