Furnace tube positioning seat

A furnace tube positioning seat adapted for positioning at least one furnace tube, comprising:

• a base having at least one round groove that is formed in a surface of said base and that extends through two opposite sides of said base in a groove-extending direction for allowing at least a portion of the furnace tube to be received therein;
• and
• at least one shock-absorbing structure including a connecting member and a shock-absorbing member, said connecting member extending in a curving direction that is transverse to the groove-extending direction and protruding outwardly from a groove defining wall of said base that defines said round groove, said shock-absorbing member including a shock-absorbing strip that is disposed on a side of said connecting member distal from said base and that is adapted for allowing said furnace tube to lean thereagainst, and two clamping strips that extend respectively from two opposite sides of said shock-absorbing strip in the groove-extending direction, said shock-absorbing strip and said clamping strips cooperatively defining an insertion groove that allows said connecting member to be removably inserted therein to thereby allow said shock-absorbing member to be stably positioned in said round groove.