Dual seal barrier fluid for hydrofluoric acid environment
Dual seal barrier fluid for hydrofluoric acid environment
(OP)
Does anyone have a recommendation for a barrier fluid to be used in a dual seal that will be in an anhydrous, gaseous hydrofluoric acid environment? I would like to use Fluorolube, but it causes significant swell in Kalrez orings. The engineer who had this project previous to me tried to use a Royal Purple (RP) product and according to John Crane the RP caused a slip-stick situation that caused the seal to fail. Any assistance would be appreciated.





RE: Dual seal barrier fluid for hydrofluoric acid environment
http://www.parker.com/o-ring/fcg/fcg.asp
it has a very good compatibility guide that may help for all seal materials compared against Fluorolube
or whatever fluid you choose
RE: Dual seal barrier fluid for hydrofluoric acid environment
RE: Dual seal barrier fluid for hydrofluoric acid environment
RE: Dual seal barrier fluid for hydrofluoric acid environment
Is your seal a dual bellows seal?
Are you getting slip stick from lack of damping on a bellows I wonder?
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Milkboy
RE: Dual seal barrier fluid for hydrofluoric acid environment
A lot of people are migrating to Nitrogen buffer systems with dry running or lift-off containment seals or outright to dual gas seals. This decreases worries about iron fluorides contaminating the buffer fluid as well as contamination from the flare header.
RE: Dual seal barrier fluid for hydrofluoric acid environment