Pusher seal with thick section components is suitable for tough dirty services. Large cross section elastomer U-cup dynamic gasket. Pusher seal with thick section components is suitable for tough dirty services. Large cross section elastomer U-cup dynamic gasket. Pusher Mechanical seals have been carefully designed and manufactured with great precision and care. Please Visit us to see our full range of puhser mechanical seals to meet all your requirements.Graphite gasketed silicon carbon rotating face provides excellent heat transfer. High pressure rotating face design for applications between 27.6 bar and 69 bar. Extra heavy duty face geometry and drive features suitable for high torque, high pressure, and high speed.