The screen washer seal will be found between the screen washer pump and the screen washer bottle or reservoir. It will form an air-tight barrier between these two components to ensure smooth operation of the screen wash system and prevent any leakage. As soon as the seal begins to show signs of perishing it should be replaced immediately, along with any filters or other seals associated with the screen washer system.


Most screen washer seals are black in colour and made from a hard rubber compound.