If you have a scupper with flappers that need replacement, look to the T-H Marine Scupper Flapper Repair Kit. This kit features molded thermoplastic elastomer construction that is resistant to damaging UV rays. The kit comes with enough parts to repair 2 scuppers of a given size.
Features and Benefits
Repairs most scuppers with flappers
Molded thermoplastic elastomer resists UV rays and the elements to prevent curling
Contains two 1.63-inch flappers, two 1.88-inch flappers and keepers and fasteners