Fluidmaster 242 Replacement Seal for Model #400A Fill Valves. It is a direct replacement seal that fits the universal Fluidmaster 400A toilet fill valve, the No. 1 selling toilet fill valve worldwide. This part offers an easy way to solve common toilet fill problems without the need of purchasing a new toilet fill valve. Use this design to extend the life of an otherwise effective fill valve. Built with quality in mind this design comes with a 1 year warranty.

• Replacement rubber diaphragm.
• Used for repairing #100 or #200A-400A ballcocks.
• Chemical resistant.
• Black color.
• 1-year warranty.