The Korky universal 3 inch valve seal kit contains two premium, longest lasting seals to repair your champion, class five, or class six flush valve. Proven longest lasting, the valve seal kit is backed by a 5 year warranty. Replaces: American Standard seal: 738651-0070A & Kohler Seal: GP1059291. Easy to install, the 435 includes: (1) Kohler Flush Valve Seal and (1) American Standard Flush Valve Seal.