Wool Felt Gaskets 100% Wool,For Mechanical,Electrical,Aviation Factory Manufacture ... Dust proof 7.1)Character:wear-resistance,dustproof,sound-insulation,quakeproof,seal,heat-insulation2)Use:mainly used for a ... dustproof, cushion, quakeproof, Heat preservation, heatproof, sound insulation, silencing, fire retardant, insulation.CertificationISO9001 ROHSUseBe used for making clothes, industry produce, ...