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What are the temperature limitations of magnetic and spring-loaded seals?

April 26, 2017limitations MAGNETIC seals spring-loaded temperature

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What are the temperature limitations of magnetic and spring-loaded seals?

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The o-ring material dictates the temperature limits for both seal designs. Therefore, typical operating temperature limits are –65°F (-54°C) to 450°F (232°C) with fluorocarbon (FKM) o-rings. Perfluororelastomer (FFKM) o-rings can extend the operating temperature up to 572°F (300°C) with a substantial increase in cost. The Alnico 5 magnet retains 97% of its magnetism at 500°F (260°C), and it has a maximum practical operating temperature of 1,000°F (538°C).