... quality at competitive price 3)certificate: ISO9001-2000 Flat belt NO.1,CharacteristicsCommon flat rubber belt, also called transmission belt, ususlly ... the seam firmer, and better adhered together better. The flat rubber belt has the characteristics of high strength ,good flexibility ... of canvas , and the sides of the belts are round.Flat belt NO.3 , physical propertyelongation at break :in vertical ...