The Victaulic 2-1/2″ Pipe Coupling Gasket is a high-quality elastomer seal designed for use in hydraulic, pneumatic, pump, and plumbing systems. Made in the United States by Victaulic, this coupling gasket ensures a secure and leak-free connection for your pipes. With a 73mm outer diameter, this unit is sold in a quantity of 6, making it a convenient and durable choice for various industrial applications.