The FOX Viton O-ring (part -137) is a replacement seal for Fox rebuild kits, specified at .103 C.S. (cross-section) with a 2.050-inch inner diameter. Supplied as a service part for shock rebuilds, this O-ring provides the precise .103 C.S. by 2.050-inch ID sizing required for Fox seal replacement and is intended for routine rebuild and maintenance.
Fox Seal O-Ring (-137) .103 C.S. X 2.050 ID Viton