The 139 belt has a special construction designed for SFMB (Surface Finishing Machine Belt) applications. This belt has a 3 ply highly cross rigid monofilament carcass that will maintain the integrity across the width and lay completely flat for sanding applications, the end result is NO EDGE CURL. The high friction positive diamond wedge grip profile is ideal for perforated vacuum sanding systems, top cover is non-marking and oil resistant with a low friction treated duck bottom fabric. Developed specifically for use on machines finishing wood and wood products.
