Megadyne manufactures high-performance multi-rib V belts in J, L, and M sections for use in demanding power transmission applications that require high speeds and ratios, with the belts constructed using polybutadiene rubber and polyester cords to provide the flexibility needed to run smoothly around small drive pulleys in compact drive packages while delivering quiet operation with low vibration and resistance to turnover at high speeds, with added fabric on the belt's backside to increase lateral stiffness, and the belts are commonly covered with high-friction, wear-resistant rubber for use in applications like puller belts in extrusion, conforming to ARPM Engineering Standard IP-26 and ISO 9982 and specified by effective length in inches multiplied by 10, cross-section, and number of ribs, with elastic cord construction multi-rib rubber belts for fixed center drives also available for OEM applications upon request.