Freddy....they are like 80 p.s.i....there is a link to read about them. Did not find any info on type of applications but seem to be rated for continuous duty in industrial applications so prob not running hot unless you run over pressure. Main issue is they are designed for use w/ magnetic drive motor so there is no shaft to seal. Have to buy their motor (don't know cost yet) or modify to adapt conventional motor and design shaft seal.
http://www.micropump.ca/micropump_120series.htm