Wrapped Construction Single Belts have an outer fabric wrap treated with an engineered synthetic rubber compound that is extremely resistant to oil and heat; specifically designed for excellent wear resistance and proven through thousands of testing hrs. The body rubber compound is a highly engineered synthetic rubber compound; created for cool running, flexibility, crack resistance and excellent bonding to the outer fabric and tensile cords. BESTORQ® Wrapped V-Belt, Fractional Horsepower, 3L Section, 0.38 in Top Width, 36 in Outside Length, 0.24 in Thickness, 1 Ribs, -18 to 80 °C, Synthetic Rubber