JSR-MS12S is a single stage mercury conductive slip ring. The maximum current of this mercury slip ring is 20A, using liquid mercury as the contact material, mercury slip ring is also called mercury rotary joint. It is a conductive rotary joint with liquid mercury as the conductive medium. Mercury slip ring using special sealing materials, insulation and conductive technology research and development production, the shell material is aluminum oxide or stainless steel, used for any rotating signals such as: tiny voltage, current, EMF, thermocouple, strain gauge, audio-visual signals, high-frequency, computer signals and electrical connections.