Parker PT-00318 Stainless Steel Flared Tube Cap 1/8 in

Product Description

The PARKER PT-00318 is a stainless steel flared tube cap designed to seal the end of a 1/8-inch OD flared tube line. It uses a 37-degree flare connection, which is the standard JIC flare geometry common in hydraulic, pneumatic, refrigeration, and instrumentation tubing systems. The cap threads onto a mating male flare fitting to close off a line during service, testing, or when a port is temporarily taken out of service. With a maximum working pressure of 9,000 psi, this cap is rated for high-pressure applications. Installation is handled by licensed technicians and qualified tradespeople working on fluid power or refrigerant systems.

This cap is suited for residential and commercial applications wherever 1/8-inch OD stainless steel tubing with a 37-degree flare end is used. Typical use cases include capping unused ports on hydraulic manifolds, sealing refrigerant line stubs during system maintenance, and pressure-testing instrumentation lines. Stainless steel construction makes it appropriate for corrosive environments, high-temperature service, and systems requiring material compatibility with aggressive media. Each package contains 2 caps.

Key Features

• 37-degree flare end connection matches standard JIC flare geometry
• 1/8-inch tube OD sizing for small-diameter tubing applications
• Rated to 9,000 psi maximum working pressure for high-pressure systems
• Stainless steel construction resists corrosion and withstands elevated temperatures
• Sold in a package of 2 caps per unit

Compatibility

Designed as an OEM-style replacement and service fitting for hydraulic, pneumatic, refrigeration, and instrumentation tubing systems using 1/8-inch OD tubing with a 37-degree flare end connection.

Installation Notes

Installation is typically performed by licensed HVAC technicians, hydraulic system technicians, or instrumentation fitters familiar with flare fitting assembly. Depressurize and isolate the line completely before removing or installing any flare fitting. Hand-tighten the cap first to confirm thread engagement, then torque using an appropriately sized open-end or flare-nut wrench. Follow applicable system codes and manufacturer guidelines for flare fitting assembly in pressurized service.