grease seal,oil seal 1.Material: 100% wool 2.Density: 0.09-0.8g/cm3 grease seal,oil seal 1.Material: 100% wool 2.Density: 0.09-0.8g/cm3 3.thick:according to your request4color:naturel wool color5width: according to your request 6.Eco-friendly, Super flexibility, high cross force,not easy loose deformation,Wear resistance, smooth hand feeling, oil absorptivity. oil seal