After years of market observation, Alphacool addresses a well-known issue with the Eiszapfen PRO Hardtube fittings: temperatures just above 60 °C can deform PETG hard tubes. This particularly affects the connections at the outputs of the CPU or graphics card water coolers. The Eiszapfen PRO Hardtube fitting is compatible with all hard tubes with a 13 mm outer diameter, and it works with PETG, acrylic, brass, and glass tubes. Additionally, the tensile strength is very high, with tests showing that 8 kg posed no problem.

For a secure hold, the fitting features an O-ring and a compression seal. The inlay and compression seal are arranged as follows: together, they create high pressure on the hard tubes. With this inlay, the installation process changes. First, the nut is slid onto the hard tube, followed by the compression seal. Then, the inlay is placed on. Finally, the fitting is screwed on as usual.

Technical details:

• Material: Brass
• Connections: External thread: G 1/4 inch, Hose: 13 mm diameter
• Color: Chrome
• Compatibility: PETG, acrylic, brass, and glass tubes.