Eaton 3129X6 Pipe End Cap 3/8 in Fnptf 1200 Psi

Product Description

The EATON 3129X6 is a straight-style industrial pipe end cap with a 3/8 inch FNPTF female thread connection. It is used to seal and terminate open pipe ends in pressurized fluid or gas systems. Rated to 1,200 psi maximum working pressure and suitable for temperatures ranging from -65 degrees F to 250 degrees F, this end cap handles demanding service conditions common in industrial and mechanical piping applications. It carries a UL Listed certification. Installation is performed by licensed plumbers, pipefitters, or qualified mechanical contractors working on fluid transfer or pneumatic systems.

This end cap fits into residential, commercial, and light industrial piping systems wherever a threaded female port requires a permanent or semi-permanent closure. Typical uses include capping unused branch outlets, sealing test ports after pressure checks, and terminating dead-end runs in hydraulic or pneumatic lines. The straight fitting shape simplifies installation in tight inline locations without additional fittings.

Key Features

• FNPTF female thread connection for a secure, pressure-rated seal on standard NPT pipe threads
• 1,200 psi maximum working pressure suits high-demand industrial and mechanical applications
• Wide temperature range: -65 degrees F to 250 degrees F
• UL Listed certification confirms compliance with recognized safety standards
• Compact overall length of 11/16 inches fits in confined spaces
• 13/16 inch hex size allows installation with standard open-end or box wrenches

Compatibility

Designed as an OEM-style replacement end cap for 3/8 inch FNPTF female-threaded pipe connections in pressurized fluid and pneumatic piping systems.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified mechanical contractor in accordance with applicable codes such as the IPC or IFGC. Depressurize and isolate the line completely before removing any existing fitting or installing this cap. Apply appropriate thread sealant or PTFE tape to the male threads being capped, per the system fluid compatibility requirements. Do not over-torque; use the 13/16 inch hex to achieve a firm, wrench-tight fit.