Parker 68C-3-2 Compression Tube Connector 1/8-27 Mnpt

Product Description

The PARKER 68C-3-2 is a brass compression tube connector designed to join a compression fitting end to a male NPT threaded port. It provides a leak-resistant mechanical connection without the need for flaring or soldering. The connector uses a 1/8-27 NPTF thread and is rated for a maximum working pressure of 400 psi and a temperature range of -65 degrees F to 250 degrees F. The tube outside diameter is 3/16 inches. Built to SAE J-512 standards, this fitting suits hydraulic, pneumatic, and fluid-transfer lines where a reliable compression-to-thread transition is required. HVAC technicians, plumbers, and industrial service techs are the primary installers.

This connector is suited for residential and light commercial applications involving refrigeration lines, instrument tubing, oil lines, and similar fluid-handling systems. It functions as a transition fitting between soft tubing and a threaded male port on a valve, manifold, or component. The 3/16-inch tube OD size is common in control-line and instrumentation plumbing. The brass construction resists corrosion in most oil, water, and air service environments, making this fitting appropriate across a broad range of trade and light industrial installation scenarios.

Key Features

• Compression x MNPT end connections for tubing-to-threaded-port transitions
• Brass construction for corrosion resistance in oil, air, and water service
• 400 psi maximum working pressure rating
• Operating temperature range of -65 degrees F to 250 degrees F
• Meets SAE J-512 standards
• 1/8-27 NPTF thread for secure, leak-resistant port engagement

Compatibility

Designed as an OEM-style compression fitting for 3/16-inch OD tubing applications requiring a male NPT threaded connection. Consult system documentation to confirm thread and tube size compatibility before installation.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or instrumentation mechanics. Shut off system pressure and depressurize all lines before disassembling or installing fittings. Ensure the tube end is cut cleanly and squarely and that the ferrule is seated properly before tightening the compression nut. Do not overtighten — follow the fitting manufacturer's recommended turns-past-finger-tight procedure for compression fittings of this type.