We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Silver Bitspower G1/4 compression fitting for 3/8 ID 5/8 OD tubing

Bitspower

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

SKU CH-RR1D-M1T39 MPN BP-CPF-CC3U

G1/4" compression fitting for 3/8" ID, 5/8" OD soft tubing with hidden O-ring and brass construction

  • TypeFittings
  • Secure leak-free seal with hidden O-ring design
  • Fits 3/8" ID 5/8" OD soft tubing precisely
  • Durable hi-quality brass construction
  • Standard G1/4" thread connects to waterblocks
  • Silver Shining finish matches build aesthetics

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.

Highlights

  • Secure leak-free seal with hidden O-ring design
  • Fits 3/8" ID 5/8" OD soft tubing precisely
  • Durable hi-quality brass construction
  • Standard G1/4" thread connects to waterblocks
  • Silver Shining finish matches build aesthetics

Specifications

TypeFittings

Questions about this item

What tubing dimensions does the G1/4" BP-CPF-CC3U compression fitting require?

The fitting is designed for soft tubing with a 3/8" inner diameter and a 5/8" outer diameter.

Will the 5 mm thread length of this fitting work with my existing G1/4" water blocks and radiators?

Yes, the 5 mm G1/4" thread is the standard length used on most water blocks, radiators, pumps and reservoirs.

How can I verify the hidden O-ring is sealing correctly after I tighten the fitting?

Pressurise the loop and watch the joint; a proper seal shows no coolant escaping around the collar or thread.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.