Eaton 681X2X1 Compression Tube Connector 1/16 in Nptf Brass

Product Description

The EATON 681X2X1 is a straight brass compression tube connector designed to join tubing to a male NPT fitting in a single, leak-resistant assembly. With a 1/16 inch NPTF thread and a compression-to-MNPT end configuration, this connector provides a secure mechanical seal without soldering or flaring. It is rated for a temperature range of -65 degrees F to 250 degrees F (-53 degrees C to 121 degrees C) and is suited for instrumentation, pneumatic, and fluid-handling lines. Plumbers, HVAC technicians, and instrumentation tradespeople install this fitting wherever a compact, reliable transition between compression tubing and a threaded port is needed.

This fitting is appropriate for use in residential and light commercial applications involving small-diameter tubing runs. Common install scenarios include control-line connections, pilot lines, and instrumentation tubing in HVAC, plumbing, and industrial process systems. Its straight profile keeps the assembly compact in tight spaces. The brass construction resists corrosion in water, air, and many low-pressure fluid services.

Key Features

• Straight compression-to-MNPT configuration for direct tube-to-thread connections
• 1/16 inch NPTF thread standard for pressure-tight sealing without additional sealant tape on the thread form
• Brass construction for corrosion resistance and durability in fluid and pneumatic service
• Rated from -65 degrees F to 250 degrees F for broad temperature compatibility
• Overall length of 0.935 inches keeps the assembly compact in confined spaces
• Weighs 0.01 pounds — minimal added load in any application

Compatibility

Designed as an OEM-style replacement or new-installation compression tube connector for small-diameter tubing systems requiring a 1/16 inch NPTF male threaded port connection.

Installation Notes

Installation is performed by licensed plumbers, HVAC technicians, or instrumentation mechanics depending on the application. Shut off system pressure and depressurize the line completely before removing or installing any compression fitting. Follow applicable IPC or IFGC guidelines for fitting installation in gas or fluid service. Do not overtighten the compression nut, as brass fittings can be damaged by excessive force.