A sealing plug for standard PC4 type pneumatic fitting ports commonly used on filament dry boxes. Insert it when the tube is disconnected to prevent moisture and dust entry, helping maintain filament quality. Features filament holding and anti-loss capabilities.

Key Features:

• Compatible with Standard PC4 Type Fittings: Designed to fit standard PC4 type tube insertion ports (for 4mm O.D. PTFE tubing), including PC4-M6 and many other common PC4 series fittings (e.g., PC4-M5, M10, G1/8) regardless of their thread size.
• Seal & Moisture Protection: Securely closes the PC4 port to help keep your filament dry. Printing with flexible filaments like TPU is recommended for better sealing performance.
• Filament Holder: A hole in the plug holds the filament tip neatly.
• Anti-Loss: The retention ring attaches to the fitting's thread, so you won't lose the plug when detached. Multiple printable files with different ring hole sizes are available to fit various fittings.
• Quick and easy to print.

Important Notes:

• This plug is designed for standard PC4 type tube insertion ports. While it should work with most standard PC4 type fittings, slight variations between manufacturers or non-standard designs may result in an imperfect fit in some cases.
• Recommended Material: For best sealing performance, printing with a flexible filament such as TPU is recommended.
• Multiple files with different retention ring hole sizes are available for download. Please select and print the file size that best fits the thread or hex nut size of your fitting.
• The retention ring needs to be placed on the fitting's thread during the fitting's installation.

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