What is a swivel?
The rotary joint is the connection sealing device that injects the fluid medium from the static pipe into the rotating or reciprocating equipment and then exhauts it from the rotary joint, referred to as "rotary joint". The earliest rotary joint was a packing type seal, in the rotating part wound with hemp rope or asbestos rope type of filler. Because of the long working time to constantly replace the filling, in order to avoid such trouble, so someone invented the sealing wear parts. This is the prototype of the rotary joint today. Later, people use plane device, using silicon carbide to effectively solve the problem of plane wear.