Fitting Alphacool 17484, brass, white, 23 mm height, 26 mm diameter, pack of 6

Alphacool 17484 is a brass fitting designed for custom PC liquid-cooling systems, finished in white and supplied as a pack of six. Each fitting measures 23 mm in height, has an outer diameter of 26 mm and weighs approximately 42 g. The Eiszapfen PRO design improves stability for hard tubing connections by combining a compression seal, an enlarged O-ring contact area and an internal nylon insert that supports PETG and similar hard tubes from the inside as well as from the outside.

Advantages

The integrated nylon insert reduces deformation of PETG hard tubes at elevated temperatures and increases the holding force of the connection. The larger contact area of the O-ring and the compression seal provide improved grip and a more secure seal compared with conventional fittings. Tested tensile strength values exceed 8 kg, which minimises the risk of slipping or loosening under load. The brass construction ensures dimensional stability and long service life in a cooling loop environment.

Suitable for

• Custom PC water-cooling loops using hard tubes such as PETG
• Builds and maintenance of desktop liquid-cooling systems
• Connections between reservoirs, radiators, pumps and water blocks
• Environments where elevated coolant temperatures may occur

Key specifications

• Material: brass body with nylon insert and elastomer O-ring
• Finish: white
• Outer diameter: Ø26 mm
• Height: 23 mm
• Weight per fitting: approx. 42 g
• Pack contents: 6 fittings in a boxed package
• Designed to stabilise hard tubes and prevent PETG deformation
• Tensile hold tested to over 8 kg

How to use

Install the fitting by sliding the hard tube (e.g. PETG) into the fitting until it seats against the nylon insert and compression seal. Ensure the tube end is cut square and free of burrs to achieve a consistent seal. Tighten any threaded retention or locking mechanism according to the cooling loop layout and manufacturer guidance, and verify that the O-ring makes full contact. After assembly, perform a leak test at operating conditions before finalising the build.

Recommendations

Use these fittings with cut and deburred hard tubes and confirm seating depth visually. Avoid exceeding typical coolant temperatures for the chosen tube material and perform a pressure or leak test after installation. When replacing fittings, inspect O-rings and nylon inserts for wear and replace them if compromised.