PVDF (polyvinylidene fluoride) pall ring is a high-performance plastic filler, which is widely used in petroleum, chemical, pharmaceutical and other fields due to its excellent chemical resistance, high purity, low precipitate and other characteristics.
PVDF Pall ring is a highly porous plastic ring with a unique internal structure with 6 flanks, each with many small holes, which allow the fluid to flow smoothly through the packing layer, improving the mass transfer efficiency and the uniformity of fluid distribution. In addition, PVDF Pall rings also have good mechanical strength and wear resistance, and can operate stably for a long time at high flow rates and pressures. 
Compared with other fillers, PVDF Pall rings have the following advantages:1High mass transfer efficiency: The unique internal structure of PVDF Pall ring makes the fluid form a good vortex flow in the packing layer, which improves the mass transfer efficiency and the uniformity of fluid distribution. 2.High chemical resistance: PVDF material has excellent corrosion resistance, can withstand the erosion of a variety of chemicals, and ensures the long-term stable operation of the filler. 
3.Low extractables: PVDF Pall rings are not easy to precipitate harmful substances during operation, which ensures the safety and environmental protection of the product. 4.Good mechanical properties: PVDF Pall rings have high mechanical strength and wear resistance, and can operate stably for a long time under high flow rates and pressures. 5.Easy to clean and regenerate: The surface of the PVDF Pall ring is smooth and resistant to fouling, making it easy to clean and regenerate. 
In summary, PVDF Pall ring is an efficient and durable filler, which has a wide range of application prospects in petroleum, chemical, pharmaceutical and other fields.