A circular disk covered in rubber or plastic with a hole in the center where the edge is sometimes tensioned by a spring that prevents fluid from leaking at the Windshield Washer Fluid Pump. Headlight Washer Pump Grommet. Seals between Reservoir and Washer Pump. Washer Fluid Level Sensor Seal. Washer Fluid Reservoir Mounting Grommet. Windshield Washer Pump Grommet. cap. Fluid Level Sensor. Fluid Mounting. WSWA SOLV CNTNR. Back Glass. Headlight. Windshield. Included with: Reservoir assembly, Washer Pump, Washer Reservoir.