Parker 68C-2-2 Compression Tube Connector 1/8-27

Product Description

The PARKER 68C-2-2 is a brass compression tube connector designed to join tubing to male NPT threaded ports in hydraulic, pneumatic, and fluid-transfer systems. It features a compression end on one side and a 1/8-27 MNPT thread on the other, providing a reliable, leak-resistant mechanical connection without soldering or flaring. Rated to 400 psi maximum working pressure and suitable for temperatures ranging from -65 degrees F to 250 degrees F, this fitting is built to SAE J-512 standards. It is a common fitting used by plumbers, HVAC technicians, and fluid-system mechanics in both light industrial and trade applications.

This connector is suited for residential and light commercial installations where 1/8-inch OD tubing must terminate at an NPT-threaded port on valves, manifolds, gauges, or equipment panels. The compression-by-MNPT configuration allows field assembly without special tooling beyond a standard wrench, making it practical for service calls and panel builds alike. It is commonly found in refrigeration lines, pneumatic control circuits, and instrumentation tubing runs where a removable, re-tightenable connection is preferred over a permanent joint.

Key Features

• Compression x MNPT end configuration for tubing-to-threaded-port connections
• Brass construction for corrosion resistance in fluid and pneumatic service
• 400 psi maximum working pressure for reliable performance in low-to-medium pressure systems
• Wide temperature range: -65 degrees F to 250 degrees F
• Meets SAE J-512 standards for dimensional and performance compliance
• 1/8-inch OD tube outside diameter with 1/8-27 NPTF thread

Compatibility

Designed as an OEM-style replacement or new-installation fitting compatible with 1/8-inch OD tubing and 1/8-27 MNPT-threaded ports in pneumatic, hydraulic, and fluid-transfer assemblies per SAE J-512.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or instrumentation mechanics. Shut off and depressurize the system fully before removing or installing compression fittings. Use a backup wrench on the mating port to avoid stressing downstream components when tightening the MNPT thread. Do not overtighten the compression nut, as brass fittings can deform the ferrule; follow standard compression fitting practice for the tubing material in use.

WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.