The O Ring Washers 18.64mm X 3.53mm 5 Pack CP035 by City Plumbing Supplies are essential components for plumbing systems. Made from durable rubber, these unfinished washers are designed to provide a secure seal for pipes and fittings. With a height of 18.64mm x 3.53mm and a pack of 5, these washers are suitable for various plumbing applications. Manufactured by City Plumbing Supplies, a trusted provider in the industry, these O ring washers ensure reliability and efficiency in your plumbing needs.