The top and bottom are encased by the wrapper. Two sides are rubber. V belt with toothed grooves is designed at the bottom to improve the bending property. Structure China factory made high quality v belt for market No. Name Function Material 1 Outside Fabric Protect the lining tensile member Polyester Cotton Canvas 2 Tensile Member Core material to pass the dynamic force Polyester Wire 3 Top Rubber Maintain the top shape of the adhesive taoe NR;CR;SBR 4 Buffer Rubber Support and protect the adhesiveforce of the tensile member NR;CR;SBR 5 Bottom Rubber Maintain the bottom shape of the adhesive tape NR;CR;SBR Features Large intensity, high flexibility, good durability; Special bottom rubber used, small elongation and long service life; Excellent heat-resistence, oil-proot, and wearing resistence; High transmission efficiency; Suitable for band pulley with minor diamenter; â?¢ Safe performance can be guaranteed even during high-speed operation. Xingtai Boshuo Trading Co., Ltd. was established in 2014. We are specialized in design, research, production and sale of v belt, raw edge v belt, poly v belt, industrial timing belt, auto timiing belt, etc. Our factory is located in Beiding Industrial Zone in Ren County of Hebei Xingtai. And it is the largest rubber production and export base in North China. We are a professional belt manufacturer. Based on the principle of honesty and mutual benefit, we are willing to build up stable cooperative relations with friends at home and abroad for a bright future. China factory made high quality v belt for market ABOUT US They are sales personnel in our company--- professionally trained, proficient in products and good at communication in English. So what we can do for you? The accurate and detailed quotation can be given at the first time. We can also give you professional advices to help you make the best choice. You will find a trust-worthy trading partner and friend among us. China factory made high quality v belt for market