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Use of gaskets and hold-down devices in industrial heat exchangers
Jan 23, 2019

In order to prevent leakage of fluid in the industrial heat exchanger and internal leakage between the two fluids, a gasket must be installed, which is installed in the sealing groove, is subjected to pressure and temperature during operation, and is eroded by the working fluid. It is also required to have good elasticity after repeated disassembly and assembly.


The gasket materials used in industrial heat exchanger products are butadiene rubber, EPDM rubber, fluororubber, neoprene, silicone rubber and asbestos fiberboard. As the process puts higher demands on operating pressure and temperature, the improvement of the sealing structure of industrial heat exchangers has also become a focus of attention. In order to better prevent internal leakage, a double seal is used on the gasket. At the same time, in order to find the internal leakage in time, many manufacturers have grooves on the sealing gasket. Once the leakage occurs, the fluid will be discharged first.


The pressing device of the industrial heat exchanger comprises a fixed and movable pressing plate and a pressing bolt, which is used for pressing the gasket to generate sufficient sealing force so that the heat exchanger does not leak during operation, and the bolt is tightened by the screw. To produce a pressing force. In the structure of the pressing device, a pressing device with electric and hydraulic pressure has appeared in recent years, so that the disassembly and compression of the plate can be automatically

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