DescriptionThis product is a set of 10-piece pressure test pump sealing ring made of high-quality materials, which can be used for many years. The material that guarantees its durability and practicality. It is perfect for professional or amateur use.Features- Color: Black. - Material: Rubber. - Size: About 2.50X2.50X0.30cm/0.98X0.98X0.12inch. -Round shape, soft, flexible, an ideal sealing gasket.- Help to prevent or stop water leaks for your connection.- Made from premium material, durable for using.- Replace old or broken washer with a new one.- Easy to use, and can bring much convenience to you.