Polishing Wheels are solid and spiral mirror rings used to clean glass. Spartan Felt is a well-known manufacturer of polishing wheels. Solid mirror rings are the most expensive due to the high cost of raw materials. Spiral mirror rings are custom-made for OEM machines, applications, or as stock parts. Spartan Felt can produce a wide range of spirals by altering the density of the synthetic substrate, the size of the fibers, the tangling of the fibers, the chemistry, and the manufacturing procedure. The prices of these items range from a simple mirror ring with a 40-hour average product life to some of our most complex technologies, which can last up to 120 hours in the same manufacturing setup.