With more requirement for the environment protection, the emission standard of smoke dust become more strict. The needle hole on the tube seam after sewing must be sealed with silica gel. This machine is exactly designed for the sealing process for the needle hole. It can be not only jointed together with the tubing line work, but also work separately for each single tube. As the special design, this machine can be widely fit for all kinds of material andsilica gel with different humidity and viscosity, which is the best choice for tube sealing.