Midland Industries 10066 Brass Flared Plug 3/8 Inch

Product Description

The MIDLAND INDUSTRIES 10066 is a brass flared plug designed to seal 3/8-inch SAE 45-degree flare connections in hydraulic and fluid-handling systems. It features a 5/8-18 UNF thread and a 0.62-inch hex for standard wrench installation. Rated to 1000 psi and suitable for operating temperatures from -65 to 250 degrees F, this plug provides a reliable pressure-rated termination point. The brass construction offers corrosion resistance and durability across a range of fluid media. Plumbers, hydraulic technicians, and mechanical contractors install this type of fitting when capping off unused or temporary ports in tubing assemblies.

The 10066 is used with aluminum, brass, copper, and steel hydraulic tubing that can be flared to the SAE 45-degree standard. It is well suited for residential and light commercial hydraulic lines, refrigeration piping, and fuel or fluid transfer systems where a flared port needs to be sealed. A minimum tube wall thickness of 0.032 inches is required for compatible tubing. This plug is appropriate for any application requiring a low-profile, pressure-rated flare plug termination.

Key Features

• SAE 45-degree flare connection seals 3/8-inch flared tubing ports
• Rated to 1000 psi for hydraulic and fluid-handling applications
• Operating temperature range: -65 to 250 degrees F
• 5/8-18 UNF thread with 0.62-inch hex for wrench installation
• Compatible with aluminum, brass, copper, and steel flared tubing
• Brass construction resists corrosion across common fluid media

Compatibility

Designed for use with aluminum, brass, copper, and steel hydraulic tubing that can be flared to the SAE 45-degree standard, requiring a minimum tube wall thickness of 0.032 inches.

Installation Notes

Installation should be performed by a qualified plumber or hydraulic technician. De-pressurize and isolate the hydraulic or fluid line completely before removing or installing any fitting. Use an appropriately sized open-end or box wrench on the 0.62-inch hex; do not use pipe wrenches or tools that could deform the fitting body. Follow applicable codes and manufacturer torque guidelines for flare fittings to avoid over-tightening, which can crack the flare seat.