... 3)MOQ:500 kg 4)Usage:felt ring seal Product’s Namefelt ring sealUsageFelted wool is ... , shipping, train, auto, metallurgy, chemical, industry, textileindustry, seal, dustproof, cushion, quakeproof, heat preservation,heatproof,sound insulation, fire ... retardant,insulation.Filtration:air,petroleum,water.Polishing:marble,crystal,glass,jadeware,furniture, ...