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Six white brass compression fittings for 16mm hard tube, G1/4 thread

Alphacool

Alphacool Eiszapfen Pro 16mm Hardtube Fitting G1/4 White Brass 6-Pack

SKU CH-RN6J-NT58D

Six white brass compression fittings with nylon inserts secure 16 mm hard tubes against deformation up to 60 °C and withstand over 8 kg pull force

  • Product typeFittings
  • White compression fittings for 16 mm hard tube
  • Nylon inserts stop PETG deformation up to 60 °C
  • Larger O-ring contact area gives stronger grip
  • Brass construction tested to over 8 kg pull force
  • G 1/4 thread with 5 mm depth fits standard blocks

White Brass 16mm Hard-Tube Fittings

These G1/4 compression fittings connect 16mm PETG, acrylic, brass or glass tubing in custom liquid-cooling loops. Nylon inserts grip the tube from inside while an oversized O-ring seals the outside, preventing slip even under high coolant temperatures. The pack contains six white-finished brass fittings for a uniform aesthetic.

Builders needing secure 16mm hard-tube runs

The reinforced grip suits loops that run warm or see vibration, and the white finish matches light-themed builds. Installers using Bitspower-brand tubing should choose a different fitting, as the supplier notes incompatibility. Anyone requiring angled, rotary or quick-disconnect styles will need a separate product.

Nylon-insert compression seal for 16mm tubing

The internal nylon collar stops PETG deformation at temperatures up to 60°C and, together with the wide O-ring, holds the tube against tensile loads tested beyond 8kg. This dual-seal design is the feature that determines whether the fitting meets your reliability requirement.

How it compares

Measured against everything we stock in Liquid Cooling & AIO Coolers, at today’s prices. Recalculated every night.

Price $40.99
Cheaper than about 65% of the 1,190 comparable items (median $71.99).

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Specifications

Product
Product typeFittings

Questions about this item

Will the nylon inserts inside these 16mm fittings need replacement after long-term use?

The nylon inserts are a permanent part of the fitting design that stabilise the tube from the inside and do not require scheduled replacement.

What is the first limit reached when these compression fittings run under sustained load?

Alphacool tested tensile strength beyond 8 kg, so tube retention remains secure before any fitting deformation occurs.

How much heat do these white brass fittings add to a loop running all day?

The brass fittings add negligible thermal load; they simply conduct coolant temperature without generating heat themselves.

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