2.Ceramic plunger connected with metal through high temperature glue or heat sealing mechanically,and they have good mechanical strength and it can connecting reliable.

3.The inner cavity surface adopts a fluid structure without dead ends or grooves. The inner surface of the cavity and the surface of the plunger are matched with the advanced high-precision inner and outer circular grinders to the mirror surface, and the outer surface is vibrated and polished to facilitate cleaning and disinfection.

4.Zirconia ceramic plunger with high hardness, wear resistance, high temperature resistant and corrosion resistant performance.