With the GARDENA Maxi-Flo™ Washer Replacement Kit, the GARDENA Maxi-Flo™ System Tap Nut Adaptors can be newly sealed. The Washer Replacement Kit includes O-rings and Flats GARDENA Maxi-Flo™ Tap Nut Adaptors (Art. No. G2801 and G2802). Through the new washers, the Tap Nut Adaptors holds watertight again, thereby removing the necessity of a new purchase.