These are the most common type of Rubber Washers, typically used for applications where a tight seal is required between two surfaces. They come in a variety of sizes, thicknesses and materials, usually manufactured in a circular shape. The flat design allows for a larger surface area to be covered, making them suitable for applications where the load needs to be spread. Neoprene Rubber Washers Styrene Butadiene Rubber Washers EPDM Rubber Washers Silicone Rubber Washers Nitrile Rubber Washers Natural Rubber Washers Butyl Rubber Washers