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Six brass Deep Black 16 mm OD HardTube fittings with 26 mm body diameter

Alphacool

Alphacool 1017628 Eiszapfen PRO HardTube fitting 16mm OD 6-pack

SKU CH-SDJQ-81ZJC MPN 1017628

Six brass G1/4 fittings with nylon inserts secure 16 mm hard tubes against deformation up to 60 °C

  • FeaturesThe new Eiszapfen PRO HardTube fittings from Alphacool are a

Color Black

  • PRO fitting stabilises 16 mm hard tubes with internal nylon inserts
  • Large compression-seal contact area prevents tube slippage under load
  • Tested tensile strength exceeds 8 kg for secure connections
  • Brass construction with 26 mm diameter fits G1/4 threads
  • Deep Black finish, six fittings per pack for complete loop builds

Alphacool Eiszapfen PRO HardTube Fittings 16 mm OD

These brass fittings are designed for custom water-cooling loops using 16 mm outer-diameter hard tubing made from acrylic, brass or glass. They come in a six-pack and suit builders who need secure, leak-free connections for rigid tube runs. The Deep Black finish matches dark-themed builds.

Nylon Inserts Resist Tube Deformation Under Heat

Internal nylon inserts stabilise the hard tube so it cannot deform even if coolant temperatures reach 60 °C. A larger contact area on the O-ring and compression seal reinforces the tube from both inside and outside, keeping the joint sealed during sustained thermal cycling.

Brass Construction With G1/4 Threads

Each fitting measures 26 mm in diameter and uses standard G1/4 threads for broad component compatibility. The screw-in design locks the tube firmly in place, withstanding tensile loads beyond 8 kg. Note that Bitspower brand tubing is not recommended for use with these fittings.

Highlights

  • PRO fitting stabilises 16 mm hard tubes with internal nylon inserts
  • Large compression-seal contact area prevents tube slippage under load
  • Tested tensile strength exceeds 8 kg for secure connections
  • Brass construction with 26 mm diameter fits G1/4 threads
  • Deep Black finish, six fittings per pack for complete loop builds

Specifications

BrandAlphacool
Model1017628
FeaturesThe new Eiszapfen PRO HardTube fittings from Alphacool are a further development of the well-known, previous Eiszapfen.
Part Number1017628

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Questions about this item

Do the 16 mm hard-tube fittings leak or loosen when the coolant reaches 60 °C?

The nylon inserts inside each fitting stabilise the tube so it cannot deform at 60 °C, and the enlarged compression seal plus O-ring keep the joint tight even under sustained heat.

What thread size must my water blocks or radiators have for these six fittings to screw in?

Each fitting uses a standard G1/4 thread, so they mount directly into any component with matching G1/4 ports.

Will the 26 mm diameter brass bodies clear the tubing runs on my older acrylic loop?

The 26 mm outer diameter fits typical hard-tube spacing, and the fittings are designed for acrylic, brass and glass tubes — just avoid Bitspower brand tubing.

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