Making is ... I'm sorry (^_^;)

I like the shape and Material. The problem is that screwing in the Blue color Union of the same material to Aluminum's Body is a thing and there are individual differences, but there is a fear of Oil leakage. Actually I leaked! Was the Screw Mountain with the Wound at the time of installation? Is there a gap from the beginning? In any case consider Ring-like Packing and consider Oil Leakage Measures I would like to expect Manufacturer.
I applied a liquid Seal made by Holtz between Body and Union and stopped the leak.
Body, Oil Filter Tightening size also decreases to Large for Center bolt installed. Even if I make a little Small ...
Oil leaked as a result! As a result, it is not too bad if you try from User with low quality, even though shape and material are good. View detail