The backing attaches the individual belts together, and is made of heavy duty woven fabric encapsulated in rubber for superior flexibility. DURA-PRIME BAND CLASSICAL belts give superior belt performance proven through thousands of hours of customer use to be durable and dependable.21 x 79in OC, 3 Band D&D DURA-PRIME BAND CLASSICAL belts meet or exceed USA RMA published ratings levels. The helically wound tensile cords are specially manufactured with, twisted, heat and chemically set, polyester material.
The helically wound tensile cords are engineered, twisted and chemically set stranded fiberglass material. All DUAL DURA-SYNC TORQUE timing belts are manufactured using the latest in synchronous belt technology. Double sided timing belts offer power transmission from both sides, and are often used in reversing and serpentine applications. DUAL DURA-SYNC TORQUE synchronous belts feature a dual sided HTD tooth profile.
. 121" Outside Length, 7/8" Top Width, 1 Ribs The body rubber is a highly engineered synthetic rubber compound, specially compounded for cool running, crack resistance, and excellent bonding to the outside fabric and tensile cords. They are manufactured to perform at identical or higher levels than all major US Manufacturer’s belts of the same type.