Felt Strip General Purpose Wool Felt Backing Type Plain Thickness 1/8 In Width 1 1/2 In Length 120 In F13 Grade Gray Color Density 1 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