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Six chrome hard-tube fittings with G1/4 threads and 13 mm bore

Alphacool

Alphacool Eiszapfen PRO 13mm HardTube Fitting G1/4 Six Pack Chrome 1017625

SKU CH-KSR6-NW6AJ MPN 1017625

Six-pack of 13 mm G1/4 chrome hard-tube fittings with internal nylon inserts that stop PETG deformation at 60 °C and a wide compression seal tested beyond 8 kg pull force

  • FeaturesThe new Eiszapfen PRO HardTube fittings from Alphacool are a

Color Chrome

  • Prevents PETG tube deformation at 60 °C with internal nylon inserts
  • Larger contact area than standard O-rings gives stronger compression seal
  • Tube reinforced from inside and outside so it cannot slip under load
  • Tested tensile strength exceeds 8 kg for secure hard-tube connection
  • Six chrome G1/4 fittings for 13 mm hard tube in one pack

Alphacool Eiszapfen PRO 13mm HardTube Fittings

These chrome G1/4 fittings are designed for custom water-cooling loops using 13 mm PETG hard tubing. They target builders who want a secure connection that resists tube deformation when coolant temperatures rise. The six-pack supplies enough joints for a typical CPU and GPU loop.

Capacity and headroom for high-temperature loops

The nylon inserts inside each fitting stabilise the hard tube so it cannot soften or collapse at 60 °C, a temperature that can occur under sustained load. A larger contact area on the compression seal and O-ring grips the tube from both sides, and Alphacool reports tensile strength beyond 8 kg. The design keeps tubes firmly seated even when system pressure increases.

Build quality and daily mounting implications

Chrome-plated brass bodies with integrated nylon reinforcement give a rigid feel during installation and resist corrosion over time. The G1/4 thread fits standard water-blocks, radiators and reservoirs without adapters. Note that the manufacturer advises against using these fittings with Bitspower brand tubing, so verify tube compatibility before planning the loop.

Highlights

  • Prevents PETG tube deformation at 60 °C with internal nylon inserts
  • Larger contact area than standard O-rings gives stronger compression seal
  • Tube reinforced from inside and outside so it cannot slip under load
  • Tested tensile strength exceeds 8 kg for secure hard-tube connection
  • Six chrome G1/4 fittings for 13 mm hard tube in one pack

Specifications

BrandAlphacool
Model1017625
FeaturesThe new Eiszapfen PRO HardTube fittings from Alphacool are a further development of the well-known, previous Eiszapfen.
Part Number1017625

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Questions about this item

Will the 13mm fittings work with my existing G1/4 loop components?

Yes, each fitting uses a standard G1/4 thread so it connects directly to any G1/4 port on radiators, blocks or reservoirs you already own.

How can I verify the nylon inserts are gripping the tube correctly after installation?

The tube should not rotate or pull out by hand; Alphacool tested tensile strength beyond 8 kg, so a firm tug that leaves the tube seated confirms the insert and compression seal are engaged.

Does the six-pack include tubing or only the chrome fittings?

The box contains six chrome Eiszapfen PRO 13mm HardTube fittings with pre-installed nylon inserts and seals; compatible 13mm PETG or acrylic hard tube must be purchased separately.

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