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Clear borosilicate glass tube, 16mm outer diameter, 40cm length

Alphacool

Alphacool 16/11mm Borosilicate Glass HardTube 40cm

SKU CH-XAR4-31R82

Clear borosilicate glass tube for rigid water-cooling loops, 16 mm OD, 11 mm ID, 40 cm long

  • ColorClear
  • FeaturesAlphacools HardTube family does get an additional sibling. T
  • Borosilicate glass resists chemicals and temperature swings for lasting loop integrity
  • 16 mm outer and 11 mm inner diameter fit standard hard-tube fittings
  • 40 cm straight length suits clean, structured routing in custom loops
  • Rigid glass construction eliminates kinks and keeps coolant paths tidy
  • Clear finish showcases fluid colour while matching Alphacool HardTube connectors

Borosilicate Glass HardTube for Custom Loops

This Alphacool HardTube is made from borosilicate glass for custom water-cooling loops. It replaces standard PVC tubing with a rigid, transparent line that resists chemicals and temperature fluctuations. The 16 mm outer diameter and 11 mm inner diameter suit builders who want a structured, tidy appearance. It is sold as a single 40 cm straight length.

Thermal Stability and Chemical Resistance

Borosilicate glass handles the temperature swings found in liquid-cooling systems without degrading. The material resists coolants and additives that can attack plastic tubing over time. Because the tube is rigid, it holds its shape without kinking, so flow remains consistent and noise from pump vibration is not amplified by flexible hose movement. No bending is possible; fixed angles must be used.

Upgrade from Flexible PVC Tubing

This HardTube replaces soft PVC or rubber hoses in open-loop builds where a clean, rigid aesthetic is preferred. The jump is worth it when the builder can plan exact runs and use compatible 16 mm HardTube connectors or 90° angled pieces. It is not for loops that require on-site bending, tight radius turns, or quick reconfiguration without cutting new lengths.

Highlights

  • Borosilicate glass resists chemicals and temperature swings for lasting loop integrity
  • 16 mm outer and 11 mm inner diameter fit standard hard-tube fittings
  • 40 cm straight length suits clean, structured routing in custom loops
  • Rigid glass construction eliminates kinks and keeps coolant paths tidy
  • Clear finish showcases fluid colour while matching Alphacool HardTube connectors

Specifications

BrandAlphacool
Model1012087
ColorClear
FeaturesAlphacools HardTube family does get an additional sibling. The new HardTubes made out of borosilicate glass certainly bring a new level of quality into every system.

Questions about this item

How do I install the 16/11mm borosilicate glass tube without cracking it?

Cut the tube squarely with a glass tubing cutter, chamfer the outer edge, then push it fully into compatible Alphacool HardTube connectors — the step most people skip is deburring the inner diameter, which prevents stress fractures when tightening the compression fittings

What maintenance or replacement will the 16/11mm glass tube need over time?

Borosilicate glass resists virtually all coolant chemicals and temperature cycles, so the tube itself rarely degrades; plan to inspect O-rings in the HardTube connectors during annual loop maintenance and replace the tube only if physical damage occurs

What is the first limit I hit when running the 16/11mm glass tube continuously?

The rigid 40 cm straight length cannot be bent — routing changes require pre-formed 90° elbows (available in 10/30 cm and 20/40 cm variants) or additional straight sections, so layout inflexibility is the practical constraint under sustained use

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