The Uniseal 1-1/4 Inch Pipe-to-Tank Seal is a high-quality seal designed to provide a secure and leak-proof connection between pipes and tanks. The seal is made of high-quality synthetic rubber that ensures durability and long-lasting performance. With a diameter of 1-1/4 inches, this pipe-to-tank seal is ideal for use in a wide range of applications, including aquariums, aquaponics systems, and other water-based systems.