It seems to be made in China, the air coupler attached to the air hose reel was not damaged, it was easy to leak the air,
I bought this packing.
The size was also perfect, and it was able to be repaired.
I also met the NAC (Nagahori Industry) coupler as well as the Nitto coupler. Nagahori made it difficult to obtain, but the price is cheap as expected and it is a one-stream maker. Attachment of Nitto products in use increased.
The coupler is controlling the temperature of the mold, leakage occurs due to wear of the packing, so packing alone can be replaced, it is very good. The running cost of the coupler body cheaply fits. It was nice to buy what I had ordered at a trading company here.