The Alphacool Eiszapfen HardTube fittings are among the most popular hard tube water cooling connections on the market. They are particularly distinguished by their high manufacturing quality and the triple sealing system.

High-Quality Coating
Alphacool uses an advanced chromating process to apply color to the brass fitting. This not only results in a more uniform color but also makes it significantly more durable and resistant to external influences. The small Alphacool logo is laser-engraved rather than printed, ensuring it cannot be removed by friction.

Triple Sealing
Leakage prevention is essential for a water circuit. Therefore, Alphacool employs three sealing rings in these Eiszapfen fittings to seal the hard tube. Two O-rings are integrated into the fitting, while the third O-ring serves as a closure and is attached together with the hard tube. The fixation is achieved through the compression nut. This not only provides triple security but also increases the tensile strength of the hard tube. This means that a considerable amount of force is required to pull the hard tube out of the closed fitting.

Installation
First, remove the compression nut along with the O-ring inside it. The fitting is then screwed onto any component with a G1/4" thread. The deburred hard tube that you want to insert into the fitting should first have the compression nut slid onto it, followed by the remaining O-ring. The entire assembly is then pushed into the fitting until it is fully seated. The final step is simply to screw the compression nut onto the fitting.