Coperchio girante Speedseal: valida soluzione?

[Frappettini]

http://www.speedseal.com/SpeedsealLife/L...tails.html
Normally the impeller rubs against a static brass cover plate with sea water as lubricant, hence a rapid failure when running dry. The illustration shows the Award Winning Extra Slip Bearing used by Speedseal Life with a PTFE disc placed between the end of the cover recess and the rotating brass disc which is in contact with the impeller.

mi pare di capire, quindi, che la girante trascina il disco di ottone il quale slitta su quello in teflon.

ricordati che vi aspettiamo a Genova!!