Parker 5 Pntx-s Steel Flared Tube Plug 5/16 in 37 Deg

Product Description

The PARKER 5 PNTX-S is a steel flared tube plug designed to seal 5/16-inch OD tubing with a 37-degree flare angle. It is used to cap off flare-end hydraulic or fluid-system lines, blocking flow at an unused or temporarily decommissioned port. The plug is rated to a maximum working pressure of 6000 psi and handles temperatures up to 500 degrees F, making it suitable for demanding hydraulic, pneumatic, and refrigeration plumbing applications. Licensed plumbers, HVAC technicians, and hydraulic system technicians install this fitting as part of routine line maintenance or system reconfiguration.

This plug is appropriate for use in both commercial and industrial fluid-power systems where 37-degree flare connections are specified. Typical applications include capping unused ports on hydraulic manifolds, sealing decommissioned refrigerant lines, and plugging flare fittings during system pressure testing. The 37-degree flare standard aligns with ISO 8434-2, SAE J514, and SAE 070109, making it compatible with systems built to those specifications.

Key Features

• 37-degree flare end connection for secure, leak-resistant sealing
• Rated to 6000 psi maximum dynamic working pressure
• Maximum working temperature of 500 degrees F (260 degrees C)
• Steel construction for durability in high-pressure fluid-power environments
• Compact profile: 0.8 inches overall length, 0.8 inches width and height
• Meets ISO 8434-2, SAE J514, and SAE 070109 standards

Compatibility

Designed for use with 5/16-inch OD tubing flared to a 37-degree angle per ISO 8434-2 and SAE J514 specifications. Suitable for hydraulic, pneumatic, and refrigeration plumbing systems using standard flare-end fittings.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified hydraulic technician. Depressurize and isolate the fluid system completely before removing or installing any tube fittings. Use appropriate flare wrenches to avoid distorting the fitting seat. Installations in refrigeration or pressure-piping systems may be subject to local mechanical codes and should be inspected accordingly.