Precision. Reliable PTFE pneumatic connector engineered for smooth filament feeding and secure tubing connections in desktop 3D printers. Ideal for 1.75mm filament systems using 4mm outer diameter PTFE tubing — reduces slips and improves extrusion stability.
Specifications:
Item Type: Pneumatic Connector
Model Number: PU-4
Compatibility: Designed for desktop 3D printers using 1.75mm filament and 4mm OD PTFE tubing
PTFE Tube Inner Diameter (ID): 2.5 mm (0.098 in)
PTFE Tube Outer Diameter (OD): 4.0 mm (0.157 in)
Filament Diameter: 1.75 mm (0.069 in)
Connector Type: PU-4 pneumatic fitting for 4mm OD PTFE tube
Color: White / Grey
Material: PTFE-compatible plastic and metal pneumatic components
Quick to install and designed for reliable hold under continuous extrusion. Use this connector to maintain consistent filament path, minimize bending at the extruder entry, and support Bowden or direct-drive setups that accept 4mm PTFE tubing.
