Rubber Washer is a type of sealing washer made from rubber material. It is used in a wide range of applications to provide a watertight seal and prevent leakage. Rubber washers are often used in plumbing and automotive applications, but can also be used in many other industrial and commercial applications. Rubber washers come in a variety of shapes and sizes, depending on the application. They can be flat or have a raised edge, and may have a circular, rectangular, or other shape to fit the specific need. The thickness of the rubber washer can also vary depending on the level of sealing required.