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At first there was leakage from the fitting part with the upper cylinder of 1 of 20 inch, but there was a slight step due to the touch in the inside of the cylinder (O ring contact part), so fine sandpaper I polished and fits. Drain parts and upper O ring are exclusive items, but added only for part parts is added, it was saved. Considering the convexity of the bottom drain when you use it stand up without using the L-shaped angle for the upper part.
Thankfully comparing it is very cheap. I tried using the filter medium and leaked slightly from the lid. Thinking that the filter material is attached, water leaks even if it is closed in the sky. Therefore, the seal tape was wrapped around a thick eyelid screw of a lid about 10 cm in diameter and tightened. Even now there is a very small amount of water leakage, but I am using it as it is. There is a feeling that it is not possible to compare plastic containers of the same brand name with tighten by merely tightening the lid by hand. But I think that it is available.