This oil seal by Chicago Rawhide is a reliable and high-quality product that measures 3.5 inches by 4.501 inches with a thickness of .375 inches. It is made of durable metal material and is suitable for various industrial automation and motion control applications. The brand is known for its excellent engineering and manufacturing processes, making this oil seal a top choice for businesses in need of premium mechanical power transmission products. With its custom bundle and unmodified features, this oil seal is a great investment for anyone looking for a reliable and long-lasting seal.