This blog is devoted to discussions about the most difficult static sealing applications; to wit, situations that combine UHV, UHP, or both, reactive gases, high temperature (>300ºC) with cycling, all in production or field environments. Under these conditions, elastomers completely fail and the job of getting a system to seal can be very difficult, sometimes impossible. In my work at Bostec Engineering, I deal with these conditions frequently. In the past 20 years I have learned a lot about what works, and what doesn’t.

Tom Kristy tom.kristy@bostecengineering.com www.bostecengineering.com