Fitting Thermaltake Pacific C-PRO G1/4 PETG

The Thermaltake Pacific C-PRO G1/4 PETG fitting is a compact aluminum and copper compression fitting finished in black, engineered for use in custom liquid-cooling loops. With a height of 21 mm, a diameter of 2.6 cm and a weight of 30 g, the fitting is intended to provide reliable, leak-resistant connections for PETG tubing while contributing to a clean system appearance. The C‑PRO Series uses four preinstalled O-rings and an updated sealing structure to improve durability and sealing compared with traditional compression fittings.

Advantages

The C-PRO fitting offers a high-flow, leak-resistant structure optimized for PETG tubing, achieved through an improved compression design and four rubber O-rings. Its aluminum and copper construction balances strength and thermal compatibility while the black finish integrates with many builds. An included double-ended open-end wrench is tailored for faster, more secure installation and safe tightening in tight spaces. The compact dimensions and light weight make it suitable for dense loop layouts without adding significant bulk.

Suitable for

• Custom PC liquid-cooling loops using PETG rigid tubing
• Tight or compact case layouts where space-saving fittings are required
• Enthusiast and modding builds aiming for consistent, visually coherent hardware
• Steps in upgrading or expanding Pacific Series water-cooling components

Key specifications

• Material: aluminum and copper construction for strength and thermal stability
• Finish: black
• Height: 21 mm
• Outer diameter: 2.6 cm
• Weight: 30 g
• Sealing: four preinstalled rubber O-rings for enhanced leak resistance
• Thread standard: G1/4 compatible with standard water-cooling ports

How to use

Begin by preparing and cutting PETG tubing to the required length, then deburr and chamfer the ends for a smooth fit. Slide the C-PRO fitting onto the tube end and ensure the O-rings are seated correctly. Thread the fitting into the water block, radiator or extender until hand-tight, then use the supplied double-ended open-end wrench to complete the final tightening. Avoid over-tightening; secure the fitting until it feels snug and the O-rings compress without deformation. Perform a pressure or leak test after assembly before powering the system.

Recommendations

Use with PETG rigid tubing as intended and pair with Thermaltake Pacific Series components for optimal compatibility. Inspect O-rings periodically and replace them if hardened or damaged. When routing in confined spaces, use the smaller end of the included double-ended wrench to avoid contact with surrounding components. Always perform a fill and leak test after installation and before normal operation.