Bitspower BP-CPF-CC3U G1/4" 3/8" ID 5/8" OD compression fitting liquid cooler

Bitspower G1/4" Compression Fitting CC3U

This silver-finished brass fitting connects 3/8" ID and 5/8" OD soft tubing to any component with a standard G1/4" thread. The hidden O-ring design seals internally for a clean look and reliable leak protection. It suits custom-loop builders who want a secure, tool-free connection with a premium metallic finish.

For 3/8" ID soft-tube loops; not for hard tubing

The fitting is made specifically for flexible tubing measuring 3/8" inner diameter and 5/8" outer diameter. It will not seal rigid acrylic, PETG or metal tubes, nor will it fit tubing with different wall thicknesses. Builders using hard-line or other soft-tube sizes need a different fitting series.

G1/4" thread with 3/8" ID × 5/8" OD tubing match

The single specification that decides compatibility is the combination of a G1/4" male thread and a compression body sized for 3/8" ID, 5/8" OD tubing. Both dimensions must match your water-block ports and tube exactly, otherwise the fitting cannot seal.