Guiding column sealing telescopic sleeve: in the tank float, the guiding column plays a role in fixing the position of the float and guiding it up and down the role of stable operation, because of its direct contact with the storage medium, floating up and down in the float, in the guiding column there are volatile residual gases, for the guiding column side wall openings, the whole telescopic sleeve will be the space within the float and the gap between the column and the space of the escape of oil and gas to isolate, with the movement of the float, the column and the gap between the escape of oil and gas always in the sealing protection role. With the movement of the floating disk, the oil and gas escaping from the gap between the column and the floating disk is always in the retractable sleeve, which plays the role of sealing and protection.

Column sheaths
Mainly used for sealing the column at the top of the floating disk.