2.
Inert chemical stability, acid-base corrosion and high temperature resistance.
3.
Hard, abrasion resistant, particle release is extremely small, long service life.
4.
Dense material, water absorption as low as zero; very high surface finish, minimal friction; therefore minimal residual materials.
5.
Thermal expansion coefficient is small, piston clearance fit more, filling accuracy can be achieved online cleaning and sterilization.