BRP manufactures a wide-range of rubber products for Military and Defense applications, including Mil-PRF (Mil-PRF Rubber). A common military specification rubber with various polymers, classes and grades. BRP Manufacturing offers classes 1 – 4 and grades 40 through 80 in a variety of thicknesses. Rubber used for military and defense applications must meet stringent standards, our military grade rubber meets or exceeds the standards requested.