Danco 2-In-1 Seat Disc for American Standard Flush Valves a versatile solution designed to replace both screw-on and snap-on discs with ease. Made from durable rubber, this 3-inch diameter seat disc ensures reliable and long-lasting performance. It is specially treated to resist the effects of chloramine found in water, enhancing its durability and maintaining optimal function within the flush valve system. This product provides a convenient and effective option that helps keep your American Standard toilet operating smoothly. Model Number: 88936