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Matte black brass G1/4 compression fitting for 3/8" ID, 1/2" OD soft tubing

Bitspower

Bitspower BP-MBCPF-CC2U G1/4" 3/8" ID 1/2" OD Compression Fitting Matte Black

SKU CH-P5S7-9PJRT MPN BP-MBCPF-CC2U

Connects 3/8" ID, 1/2" OD soft tubing to G1/4" threads with a hidden O-ring and matte black brass body

  • TypeFittings
  • Fits 3/8" ID and 1/2" OD soft tubing for secure water-cooling loops
  • G1/4" thread matches standard water-block and radiator ports
  • Hi-quality brass construction resists corrosion in long-term coolant contact
  • Hidden O-ring design seals internally for a clean matte-black finish
  • 5 mm thread length allows flush mounting in shallow ports

G1/4" Matte-Black Compression Fitting

This Bitspower BP-MBCPF-CC2U fitting connects soft tubing with a 3/8" inner diameter and 1/2" outer diameter to any component sporting a standard G1/4" thread. The hidden O-ring design seals reliably without an exposed rubber ring. Precision-machined brass with a matte black finish resists corrosion inside custom liquid-cooling loops. It is built for builders who want a clean, uniform look across every joint.

Upgrade from Barb or Push-Fit Connectors

Switching to this compression design removes the hose clamps that barb fittings require and eliminates the grip-ring fatigue found on many push-fit models. The 5 mm thread engagement seats firmly in radiators, blocks and reservoirs without bottoming out. The step up is worth it when you plan to disassemble the loop for maintenance or upgrades and need a seal that survives repeated tightening cycles.

Straightforward Install with One Common Pitfall

Slide the compression nut onto the tubing, push the tube over the barb until it seats against the hidden O-ring, then tighten the nut by hand plus a quarter turn with a wrench. The only frequent mistake is cutting the tube end at an angle or leaving burrs, which prevents the O-ring from seating and causes slow weeps. A clean, square cut and a quick visual check before final torque avoids the issue entirely.

Highlights

  • Fits 3/8" ID and 1/2" OD soft tubing for secure water-cooling loops
  • G1/4" thread matches standard water-block and radiator ports
  • Hi-quality brass construction resists corrosion in long-term coolant contact
  • Hidden O-ring design seals internally for a clean matte-black finish
  • 5 mm thread length allows flush mounting in shallow ports

Specifications

TypeFittings

Questions about this item

What thread size and tubing dimensions does this fitting accept?

It uses a G1/4" thread and fits soft tubing with a 3/8" inner diameter and 1/2" outer diameter.

How do I install the compression fitting and what step is often missed?

Slide the compression ring onto the tubing, push the tubing fully over the barb until it seats against the hidden O-ring, then tighten the ring by hand plus a quarter turn with a wrench; the missed step is not pushing the tubing far enough to engage the O-ring.

Which part will need replacement if the seal degrades over time?

The hidden O-ring inside the fitting body is the sealing element that would require replacement if it loses elasticity or leaks.

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