Alphacool Icicle HardTube connectors are among the most popular HardTube water cooling connectors on the market. They are especially characterized by their high build quality and the triple sealing system.\nHigh-quality coating\nAlphacool uses an advanced chromate coating to apply the paint to the brass connector. This not only makes the paint more uniform, but it is also much more durable and resistant to external influences. The small Alphacool logo is lasered in and not printed on. This also prevents it from being removed by friction.\n\nTriple sealing is essential for a water circuit. Therefore, Alphacool uses three sealing rings in these icicle connectors that seal the HardTube. Two O-rings are integrated into the connector, while the third O-ring serves as a closure and is attached together with the HardTube. Fixation is provided by the union nut. This not only provides a triple lock, but also increases the tensile strength of the HardTube. This means it takes a considerable amount of force to pull the HardTube out of the closed connection.\n\nMounting\nMan removes the union nut along with the O-ring inside. The connector is then screwed onto any component with a G1/4" thread. The union nut is first pushed onto the deburred HardTube, which is to be inserted into the fitting, and then the remaining O-ring is pushed on. The whole thing is then pushed into the fitting as far as it will go. The last step is to screw the union nut onto the fitting.