Used to repair Vacu Flush toilet. If your system won't hold a vacuum and the Bellows Pump is not leaking -- you need them.
There are lots of YouTube videos that explain how to replace them.
Item Height: 1.5inch
Item Diameter: 1.5inch
Item Length: 1.5inch
Item Weight: 50g
Item Width: 1.5inch
Special Features: Duck Ball Valve Kit
Material Type: Rubber