![](https://waterstal.ua/3041-large_default/drain-valve-membrane-tm-waterstal-rezinoplast-o-68x21-mm.jpg)
Membrane flush valves are designed to eliminate water leakage into the toilet.
You can buy a membrane of flushing fittings, ТМ "Waterstal", Ø 68x21 mm wholesale and retail using a basket of orders. Or contact the manager.