Chloride ions—oil seal corrosion issue
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Our company has a rotary evaporator, which uses skeleton oil seals for sealing. The medium contains 1% chloride ions, at a temperature of 110℃ ； Currently, fluororubber skeleton oil seals are being used; domestic ones generally last only two days, while imported ones can last three months ； I would like to ask what kind of seal should be used in this situation
Hello, in such a case, it is recommended to use soft PTFE.
Could we try using SKF’s oil-free lubricated bearings instead of bearings that require lubricant?
Can it be replaced with a mechanical seal? But the cost has increased a lot. You can also try using a PTFE shaft seal
It is recommended to use a mechanical seal, while paying attention to the material used in it
It’s likely that the failure was caused by corrosion of the skeleton material; fluorocarbon seals can resist chloride ions. It is recommended to use LIP SEAL, or ask the seal manufacturer to create a skeleton seal made of nickel-based alloy – most manufacturers are able to do this. We have customized them before
Our company specializes in imported seals from Germany, focusing on seals that can operate at ultra-low temperatures of -270°C, as well as at ultra-high temperatures of +1100°C. They are also suitable for high pressures up to 680 MPa, and they offer excellent corrosion resistance. We provide both dynamic and static seals; the dynamic seals can handle speeds of up to 40 m/s (or even higher). For more information, please contact 18678860293 via VX