Harwal International, Inc. In stock inventory and parts on demand are top priorities for our customers. As an industry leader since 1969, we at Harwal acknowledge these critical needs and are proud to offer one of the most robust inventories in the North America. We offer In Stock access to a full line of various products including Metric and Standard Oil Seals, End-Caps, V-Rings, Gamma Seals, U-Cups, Wipers, Shaft Repair Sleeves, and O-Ring Kits. Harwal continues to be among the top wholesale distributors of fluid sealing components with over 9,000 sizes and styles available every day.