The Parker A-Lok 4 ALOK-B-SET compression tube fitting is made of brass and connects to tubing on both ends. This is a ferrule set and provides a leak-proof seal when compressed between two mating components. This fitting is made of brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability. Brass can be connected to copper, brass, plastic, aluminum, and welded steel. This fitting is suitable for use in chemical, petroleum, power generation, laboratory, and medical device plants. It is compatible with stainless steel, copper, rigid and semi-rigid plastic tubing, but is not recommended for soft tubing.

Pipe and tube fittings are components used for connecting, terminating, controlling flow, and changing the direction of piping in many different industries. Compression fittings do not require tools or sealants, and are useful in installations where a heat source, such as a soldering torch, is prohibited. When purchasing fittings, consider the application, as this will affect material type, shape, size, and required durability. Fittings are available threaded or unthreaded, in many shapes, styles, sizes, and schedules (pipe wall thickness).

Parker Hannifin manufactures electromechanical, hydraulic, and pneumatic motion technologies and systems. The company, founded in 1918 and headquartered in Cleveland, OH, provides fluid handling, filtration, sealing and shielding, climate control, process control, and aerospace technologies.