Hardtube fitting OPTIMUS 12 mm, black — single compression connector for rigid tubing

OPTIMUS hardtube fitting for 12 mm rigid tubing in black is a single compression connector designed to join and seal straight segments of hard tubing in liquid cooling and custom fluid routing applications. The fitting provides a low-profile threaded connection that secures 12 mm outer-diameter rigid pipes, creating a compact point for inline transitions or extensions within water-cooling loops and other closed fluid circuits.

Advantages

This single compression connector combines a simple, compact design with a threaded compression mechanism to deliver a reliable seal for hard tubing. The black finish offers visual uniformity in systems where aesthetics and low reflectivity are desired. The fitting is engineered for mechanical stability and repeated assembly, enabling maintenance or reconfiguration without specialized tools.

Suitable for

• PC liquid-cooling loops using 12 mm outer-diameter hard tubing
• Custom cooling systems and prototype fluid circuits
• Enclosed or space-constrained installations requiring a low-profile connector
• Situations where a threaded compression joint is preferred for serviceability

Key specifications

• Compatible tube outer diameter: 12 mm rigid hard tubing
• Connector type: single compression (single ferrule) threaded connector
• Finish: black (matte or low-reflectivity coating)
• Recommended application: liquid cooling and custom fluid routing
• Mechanical connection: compression seal designed for rigid pipe retention

How to use

Prepare the 12 mm hard tubing by cutting squarely and deburring the end to ensure a flat mating surface. Insert the tube into the fitting until it seats fully against the internal stop, then tighten the compression collar by hand and finish with an appropriate tool if necessary to achieve a secure seal. Do not overtighten; compression fittings are designed to seal by deformation of the ferrule against the tubing and body. Inspect the joint for alignment and test the system at low pressure before returning to normal operating conditions.

Recommendations

Use only rigid tubing that matches the specified 12 mm outer diameter and check compatibility with the coolant to avoid chemical interactions. During assembly, ensure tube ends are clean and free of chips to maintain sealing integrity. Periodic inspection during maintenance cycles is advised to confirm continued seal performance.