Can the external flushing be eliminated for high-temperature-resistant bellows seals?
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First, one should understand the function and role of external flushing. External flushing features cleanliness and a constant temperature. 1. A clean external flushing can wash away dirty particles around the seal, keeping the liquid film between the end faces clean and preventing abrasive wear of those end faces. 2. External flushing at a constant temperature ensures stable sealing performance and prevents the elastic elements from losing their elasticity due to high temperatures. Therefore, not only is external flushing indispensable for dirty media, but even though wave plates are made of heat-resistant metals, some high-temperature media still require external flushing for cooling in order to maintain a stable liquid film on their end faces and prevent vaporization.
Take a good look at the standards; using external flushing for cooling is a waste
Well, it also depends on the specific operating conditions and temperature of the medium, right?