The Korky #435 3" Tower Flush Valve Seal is a high-quality product designed specifically for Kohler and American Standard toilets. Made in the USA, this seal is an essential component for ensuring a proper seal and reliable flushing function in your bathroom. Included in the package is the flush valve seal, providing a convenient solution for maintaining your toilet. Perfect for DIY enthusiasts or professional plumbers, this Korky product is a reliable choice for your bathroom needs.