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Brass 90-degree hard tube, 13 mm OD, deep black gloss, 10 cm and 50 cm legs

Alphacool

Alphacool Brass HardTube 13mm OD 90° Deep Black 10/50cm

SKU CH-BZJR-W26V2

Pre-bent 90° brass tubing with a 13 mm outer diameter, 12.2 mm inner diameter and .8 mm wall thickness, supplied as 50 cm and 10 cm lengths in a Deep Black gloss finish

  • TypeTubing

Color Black

  • Brass construction with 0.8 mm wall resists deformation during tight 90° bends
  • 13 mm OD and 12.2 mm ID match standard hard-tube fittings without adapters
  • Deep Black gloss coating withstands handling and resists visible scratches under normal use
  • Pre-bent 50 cm and 10 cm legs speed up loop assembly in compact chassis
  • 150 g brass set adds structural rigidity while remaining easy to cut and deburr

Brass HardTube for custom loops

The Alphacool Brass HardTube is a pre-bent 90-degree tube designed for custom liquid cooling loops. Its brass construction with a deep black gloss coating provides a rigid, premium appearance. The tube suits builders who want a fixed-angle connection without heating and bending straight tubing themselves. It is not for users who need flexible routing or longer continuous runs.

Behaviour under sustained load

The brass material maintains its shape and dimensional stability at typical coolant temperatures. A wall thickness of .8 mm resists deformation when the loop is pressurised during extended operation. The fixed 90-degree bend eliminates the risk of kinking that can occur with improperly bent straight tubes. Flow characteristics remain consistent because the inner diameter stays uniform through the curve.

Thermals noise and power

As a passive component the tube adds no noise and draws no power. The brass wall conducts heat away from the coolant slightly, but the effect on overall loop temperature is negligible. The gloss black coating resists scratches and chipping under normal handling, preserving the finish without requiring active cooling or maintenance. Net weight is 150 g.

Highlights

  • Brass construction with 0.8 mm wall resists deformation during tight 90° bends
  • 13 mm OD and 12.2 mm ID match standard hard-tube fittings without adapters
  • Deep Black gloss coating withstands handling and resists visible scratches under normal use
  • Pre-bent 50 cm and 10 cm legs speed up loop assembly in compact chassis
  • 150 g brass set adds structural rigidity while remaining easy to cut and deburr

Specifications

TypeTubing

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Questions about this item

Does the 13 mm brass tube add heat or noise to a loop running all day?

The brass tube is a passive component with no moving parts, so it produces no noise and does not generate heat; it simply conducts coolant between fittings.

What fittings must I already have to connect the 13 mm OD tube?

You need compression or push-fit fittings sized for 13 mm outer diameter and 12.2 mm inner diameter, plus a deburring tool to smooth cut edges before assembly.

Will the 90° pre-bent tube align with older 13 mm hard-tube runs in my build?

Yes, the 13 mm outer diameter matches existing 13 mm hard-tube loops, and the 50 cm long side plus 10 cm short side follow a standard 90° bend radius for straightforward integration.

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