Description Designed for pitcher pump, this seal cup can provide great sealant for your pump. Made of premium material for long time and durable use. It has a simple design, but very practical in use, giving you a good using experience. Also can be a good gift choice for your friends, they will like it. Features - Color: Black.- Material: Rubber.- Size: 8.00X8.00X1.40cm;/3.14X3.14X0.55in;Top: 7.6cmBottom: 6.9cm- The function of the leather cup is that when the piston of the water pump runs downward, the valves of the water pump will open upward due to the water pressure, allowing water to flow into the cavity of the water pump.- When the handle is pressed, the piston of the water well pump moves upward, and the valves will close automatically to lift the water out of the cavity.- Made with high grade rubber, wear-resistant and corrosion-resistant, can be used for a long time.- This water pump seal cup is suitable for all 75mm pressurized well pumps.- Exquisite workmanship, reasonable structure, professional and practical, can bring you convenience.Package list: 6 x Seal Water Pump Cups