Ensure a leak-free and flawless seal on the high-pressure hydraulic circuits of your agricultural machinery with our range of U-Seal rings. Also known as Bonded washers or Dowty seals, these bi-material washers consist of an outer metal ring (galvanized steel) and an inner vulcanized elastomeric rubber lip (NBR). Specifically engineered to replace traditional copper washers in critical areas of the hydraulic system, U-Seal rings provide superior sealing performance because the flexible rubber adheres perfectly to the fitting threads while the solid metal frame prevents over-compression during tightening. They are ideal for eliminating oil leaks on hydraulic pumps, control valves, top link cylinders, and side lift arms of tractors and farm equipment subjected to heavy vibrations and high pressure peaks.