4 Pieces Replacement Silicone Gasket for 2L Flip Top Growler Beer Bottle (Thickness:4mm)

Sadly these do not fit correctly. The gaskets are flat silicone, rather then the cone shape of the original. Consequently there is not a hermetic seal. When I laid a 'growler' with beer in it, in the fridge, it immediately starter to leak. As such I would advise readers to avoid these gaskets, as sadly they 'do not work'. It is deeply infuriating that WASSMANN INDUSTRIALGLASS, the manufacturers of these containers (called Bier Siphon's) do not provide a replacement service. These are high quality products and are costly. However when the seal goes, then there is no adequate replacement. This is exceptionally poor customer service!In all fairness to these producers, the cost is very reasonable and the turn around time (delivery from China) is excellent.