Parker 20-6 Barbed Tube Plug 0.25 Inch Id Brass

Product Description

The PARKER 20-6 is a brass barbed tube plug designed to seal the open end of flexible tubing in fluid and pneumatic line applications. The multiple-barb design grips the inner wall of the tube as the plug is inserted, creating a secure, leak-resistant seal without tools or clamps. With a tube inside diameter of 0.25 inches and a tube outside diameter of 0.375 inches, this plug is sized for standard quarter-inch ID flexible tubing. It is installed by plumbers, HVAC technicians, and fluid-system technicians who need a fast, reliable way to cap or terminate a tubing run.

This plug is suited for use in low-pressure fluid and pneumatic lines where a permanent or semi-permanent end cap is needed. Common applications include capping irrigation lines, refrigeration drain tubing, compressed air distribution runs, and similar flexible tubing systems in both residential and light commercial settings. The brass construction makes it appropriate for water, air, and many non-aggressive fluid media.

Key Features

• Multiple-barb profile locks into tubing ID for a secure, no-tool installation
• Brass construction resists corrosion in water and air service
• 0.25 inch tube inside diameter sizing fits standard quarter-inch flexible tubing
• Compact, single-piece design with no moving parts
• Sold individually for single-point repair or service work

Compatibility

Designed as an OEM-style replacement or service fitting for flexible tubing with a 0.25 inch inside diameter and a 0.375 inch outside diameter in fluid and pneumatic line applications.

Installation Notes

Installation is performed by hand — press the barbed end firmly into the tubing ID until the barbs are fully seated. Shut off system pressure and drain or depressurize the line before inserting the plug. No thread sealant or clamps are required for standard low-pressure service. Verify the tubing ID and OD match the plug specifications before installation to ensure a proper seal.