The material of the centrifugal pump seal ring is usually selected according to the different working environment and medium. Common materials include: Seal ring manufacturer custom hotline: 198-5653-1933 Rubber: Nitrile Rubber (NBR) : Oil resistant, wear resistant, low cost, suitable for mineral oils and other petroleum-based liquids. Fluorocarbon Rubber (FKM or Viton) : With extreme heat, chemical and oil resistance, it is suitable for high temperature, highly corrosive fluid environments. Silicone Rubber: wide temperature range, good low temperature performance, can be used in hot water, steam and some chemicals. Polytetrafluoroethylene (PTFE) : PTFE is a high-performance plastic, because of its excellent high temperature resistance, low temperature resistance, chemical corrosion resistance and low friction coefficient and widely used in chemical pumps and other applications. Graphite: As a non-metallic sealing material, graphite has good self-lubrication, high temperature resistance, corrosion resistance, and is often used to make dynamic ring and static ring components of mechanical seals. Filled polytetrafluoroethylene: in pure polytetrafluoroethylene add glass fiber, bronze powder, carbon fiber and other reinforcement materials made of, improve its wear resistance and strength, suitable for use in harsh conditions. Ceramic or cemented carbide: used to manufacture dynamic and static torus of mechanical seals, such materials have high strength, high hardness and good wear and corrosion resistance. The selection of centrifugal pump sealing ring materials need to consider many factors, such as the nature of the pump transport medium (such as acid and alkali, whether it contains particles, temperature, etc.), operating pressure, speed and expected service life.