Hello, my name is Gregory Hines, manufacturing & Supplier of mechanical products. It can be used to make an o ring belt, line shaft O-rings, roller-to-roller O-rings,  and much more. Polycord comes in spools of various diameters. It can be used for heavyweight items. Comes in various colors (blue, red, green) based on maximum weight (88A). To know more you may visit the website.