Hardtube fitting set OPTIMUS OP-FIT-HARD-12MM-NICKEL-6PACK — 12 mm, 6-piece with installation tool, satin nickel

OPTIMUS hardtube fitting set for 12 mm rigid tubing contains six precision fittings and a dedicated installation tool, finished in satin nickel. Designed for building or servicing custom water-cooling and fluid-routing systems, the set provides compact, leak-resistant connections for 12 mm metal or hard plastic tubing. The satin nickel surface offers a corrosion-resistant, low-reflective finish that integrates with a range of system aesthetics while maintaining functional durability.

Advantages

The set includes six matching fittings and a purpose-made installation tool to simplify assembly and maintain consistent connection quality. Satin nickel plating enhances corrosion resistance and reduces visible wear compared with untreated metal, while the fittings’ geometry is optimized for secure compression on rigid tubing. The compact form factor allows for installations in confined spaces and facilitates clean routing of coolant lines. The kit is aimed at users who need reliable, repeatable joins without fabricating custom adapters.

Suitable for

• Custom PC water-cooling loops using 12 mm hard tubing
• Fluid-routing in small industrial or laboratory setups with rigid tubing
• Replacement or upgrade of existing 12 mm fittings in closed-loop systems
• Prototyping and testing of cooling or fluid transfer systems requiring compact fittings

Key specifications

• Fitting type: compression-style hardtube fittings for rigid tubing
• Compatible tube outer diameter: 12 mm
• Finish: satin nickel plating for corrosion resistance
• Pack contents: six fittings and one installation tool
• Material characteristics: metal construction designed for mechanical durability
• Application: liquid cooling and fluid-routing systems with rigid metal or hard plastic tubing

How to use

Prepare the 12 mm rigid tubing by cutting squarely and deburring the end to ensure a flat sealing surface. Slide the fitting components onto the tube as instructed by the manufacturer, then use the included installation tool to compress or secure the fitting according to the recommended torque or hand-tightening procedure. Inspect each joint visually and perform a pressure or leak test under operating conditions before regular use. For replacement work, remove the old fitting, clean the tube end, and refit using the same installation sequence.

Recommendations

Use compatible 12 mm rigid metal or hard plastic tubing only; avoid flexible soft tubing with these fittings. When installing, follow safe handling practices and verify seals with a controlled leak test. Periodically inspect fittings for corrosion or looseness, and replace any component showing wear or damage.