Parker 12 Pntx-s Steel Flared Tube Plug 3/4 in 37 Deg

Product Description

The PARKER 12 PNTX-S is a steel flared tube plug designed to cap and seal hydraulic and fluid system tubing with a 37-degree flare end connection. Built for use in high-pressure line service, this plug accepts a 3/4 inch tube OD and holds a maximum working pressure of 5000 psi. The overall installed length is 1.28 inches. Rated to 500 degrees F (260 degrees C), it handles demanding thermal environments across industrial, hydraulic, and fluid-power applications. Licensed plumbers, pipefitters, and fluid-system technicians install this type of fitting during system commissioning, maintenance shutoffs, or line capping procedures.

This plug is suited for use in hydraulic lines, refrigeration circuits, and industrial fluid systems where a 37-degree flare end termination is required. It conforms to ISO 8434-2, SAE 070109, and SAE J514, making it appropriate for applications where standards compliance is specified. The 3/4 inch tube OD sizing is common in mid-size hydraulic and process plumbing circuits. It is typically installed wherever an active port or open line end must be safely sealed during service or equipment modification.

Key Features

• 37-degree flare end connection matches SAE and ISO standard flare fittings
• Steel construction rated to 5000 psi maximum working pressure
• Temperature rated to 500 degrees F (260 degrees C) for high-heat environments
• Compliant with ISO 8434-2, SAE 070109, and SAE J514 standards
• Compact overall length of 1.28 inches for installations with limited clearance
• 3/4 inch tube OD fits common mid-range hydraulic and fluid-system line sizes

Compatibility

Designed as an OEM-style replacement or service plug for hydraulic and fluid-power systems requiring a 37-degree flare end tube plug with a 3/4 inch tube OD per SAE J514 and ISO 8434-2 specifications.

Installation Notes

Installation should be performed by a qualified pipefitter, hydraulic technician, or licensed plumber. Depressurize and fully isolate the fluid system before removing any existing fittings or installing this plug. Use appropriate flare fitting assembly practices per SAE J514 guidelines. Do not overtighten; thread engagement and torque should follow the system designer's specifications for the fitting size and material.