Universal Flush Valve Seal 2" Round Rubber, Gray - Kohler GP83888 Ensure a secure, leak-free seal in your Kohler toilet with the Kohler GP83888 Universal Flush Valve Seal ? a genuine OEM replacement gasket designed specifically for 2-inch flush valves in Kohler 1-piece toilets. Made from high-quality flexible rubber, this gray gasket provides a durable, watertight connection between the flush valve and tank, preventing water from seeping into the bowl and maintaining optimal tank performance. Precision-engineered by Kohler, this round gasket features one ridged edge to ensure proper alignment and a tight fit during installation. Its 2-inch diameter is compatible with a wide range of Kohler models, making it an ideal repair part for plumbers and homeowners alike. The flexible rubber construction allows for easy compression and sealing, even in slightly uneven surfaces, while resisting degradation from constant water exposure. The GP83888 replaces worn, cracked, or warped gaskets that can cause phantom flushes, slow leaks, and inefficient water use. Installing a genuine Kohler part helps preserve the integrity and performance of your toilet system and supports the original warranty. This gasket is not wax-based and is intended solely as a flush valve tank seal. Measuring 4.85 inches in length, 0.5 inches in width, and 1 inch in height, with a 6-inch depth including packaging, it is lightweight at just 0.130 lb and comes individually packaged for protection and retail readiness. Features - Genuine Kohler replacement flush valve gasket - Designed for 2-inch flush valves in Kohler 1-piece toilets - Flexible rubber construction for reliable, leak-proof sealing - One ridged edge ensures correct positioning and compression - Prevents tank water from leaking into the bowl - Maintains proper flush performance and water efficiency - Durable gray rubber resists wear and water damage - Easy to install during toilet repair or maintenance - Packaged individually for protection and authenticity - Helps preserve original product warranty when used with Kohler parts Specifications - Brand Name: Kohler - Model Name: Kohler GP83888 - Part Number: GP83888 - UPC: 650531688439 - Product Type: Flush Valve Gasket - Plumbing Part Type: Gasket - Diameter: 2 inches - Material: Rubber - Primary Material: Rubber - Color: Gray - Standard Color Family: Gray - Shape: Round - Flexibility: Yes - Wax Free: No - Use: Toilet - Fits: Kohler - Product Dimensions: 4.85"L x 0.5"W x 1"H - Product Depth (in.): 6 - Product Thickness (in.): 6 - Pack Size: 1 - Each Weight: 0.130 lb - Manufacturer: Kohler - Country of Origin: United States Product Application The Kohler GP83888 Flush Valve Gasket is designed for use in Kohler 1-piece toilets requiring replacement of the flush valve seal. It is ideal for repairing leaks at the base of the flush valve where water continuously seeps into the bowl, often causing running toilets and increased water bills. Commonly used during toilet maintenance, cartridge replacement, or full flush valve upgrades, this genuine Kohler part ensures proper fit, function, and longevity. Trusted by professional plumbers and DIYers, it delivers reliable performance and supports the original engineering standards of Kohler plumbing systems. A must-have for effective, long-term toilet repairs.