6 Pcs Replacement Part Reservoir Tank Valve Rubber Gasket, Blue Washer Reservoir Plug Compatible with Waterpik Water Flossers WP900, WP112, WP250, WP300, Ultra, Nano, Traveler, VAVA, H2o (Black)

Fits perfectly and solved my problem with the leaking tank. The price is awesome also.

Mine has been leaking for years, and they always had to push down the gasket with my finger to prevent a leak. Took me a while to figure out that it’s a gasket I can replace. This was an exact fit, and installation takes all of two seconds.Just wish that manufacturer would have included a replacement parts in the initial kit.

Works as expected so far. I had a leaky valve and now it doesn't leak. Easy to remove the old one and replace the new one. Saved buying a new reservoir for a fraction of the price.

it works on my device.

Was a perfect fit for my Waterpik flosser. I also got six for half the price of one through Waterpik company.

Not exactly replacement but it 100% works. My original gasket looks much bigger because of the larger hat size. I wanted the exact replacement but since it works I'm ok with it and took off one star only because it's not exactly the same. I wish I could just take half a star.I got my waterpik from Costco about four years ago but I think the harsh chemicals like mouthwash and hydrogen peroxide is harsh on the rubber gasket.

This is the perfect replacement part for the water pic. High quality rubber material indistinguishable from the original. Easy to install, push out the old one from bottom... push in the new one from the inside of tank. Better than buying a whole new tank. Cures the leaking problem.

I have a water pic and the tank was leaking badly. I replaced the plug with this product and the leak is gone. A cheap fix when I thought I as going to have to replace water pic.