Kohler 3.5" Yellow Rubber Canister Valve Toilet Seal, designed for all Kohler single flush class 5 and class 6 toilets Crafted from durable, chemical-resistant rubber, this seal ensures long-lasting performance Its 2-1/2 inch inner diameter and 3-1/2 inch outer diameter provide a secure fit, preventing leaks and ensuring optimal toilet flushing performance This genuine Kohler part comes with a one-year limited warranty, offering peace of mind 4 pack Kohler 3.5" Yellow Rubber Canister Valve Toilet Seal, designed for all Kohler single flush class 5 and class 6 toilets. Crafted from durable, chemical-resistant rubber, this seal ensures long-lasting performance. Its 2-1/2 inch inner diameter and 3-1/2 inch outer diameter provide a secure fit, preventing leaks and ensuring optimal toilet flushing performance. This genuine Kohler part comes with a one-year limited warranty, offering peace of mind. 4 pack.