Coaxial magnetic coupling is used in seal-less magnetic driven pumps to transmit torque to an impeller. A standard electric motor drives a set of permanent magnets that are mounted on a carrier or drive assembly.
The earphone tube is designed to be rotated and detachable. It is made of standard stainless steel. Every time you screw on the tube, it is full of ceremony!
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Titanium mechanical products (sheets, plates, tubes, wires, forgings, castings) are used in industry, aerospace, leisure and titanium powder is used in the pyrotechnic industry to provide bright burning particles.