Felt Sheet General Purpose Wool Felt Backing Type Plain Thickness 1/4 In Width 72 In Length 36 In F-11 Grade Gray Color Density 2 Lbs/Sq Yd Min Temp Rating -80 Deg F Max Temp 200 F Vibration Absorption Low Abrasion Resistance Fair Durometer 15 to 25 Shore A Tensile Strength 225 PSI Hardness Soft For Pads Insulation Dryer Seals Gaskets