The IHF Plastic lining pump is designed according to international standards. The pumping housing is made of metal outing lined with fluoroplastics, and the impeller and pump cover are pressed into form with metal inserts wrapped by fluroplastic alloy, and the shaft seal is realized by mechanically sealing the advanced outer-carrying corrugated pipe. The stationary seal ring is made of 99.9% alumina ceramics, while the rotating seal ring is made of tetrafluoro filling materials ( or other materials in light of customer's special working condition). They are corrosion- and wear-resistant and airtight.