K-GP1059291 Canister Flush Valve Seal - 2 Pack

K-GP1059291 Canister Flush Valve Seal

Key Features

• Package contains two seals
• Material: Chemical-resistant silicone
• Outer Diameter: 3.35 inches (8.5cm)
• Inner Diameter: 2.6 inches (6.6cm)
• Replaces original red or yellow colored seals

Replaces / Cross-Reference Part Numbers

• Kohler: K-GP1059291, GP1059291, 2475620, 1049291
• Korky: 451

Compatibility & Fitment

• Fits KOHLER single-flush canister toilets
• Designed for toilets with Class 5 and Class 6 flush systems
• Compatible with tank model K-4436

When to Replace

• Toilet runs constantly or leaks water from the tank into the bowl
• Flush is weak or incomplete
• Existing seal is visibly worn, cracked, or warped

Installation Tips

• Turn off the water supply before installation
• Flush the toilet to drain the tank completely
• Remove the canister mechanism to access the seal
• Clean the valve base and canister surfaces before installing the new seal
• Ensure the new seal is seated flat and is not twisted