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mechanical seal lubrication fluid advice

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AdeV:
I happened across this page while googling:  http://www.mcnallyinstitute.com/02-html/2-5.html

It might be of some use in this instance?

picclock:
@ Adev

Many thanks, I think I'd already seen that page. As with most info out there it goes into reams of detail about contact faces and elevated temperatures, none of which apply to this application. I am slightly tempted to go for water but one of the sites said that oygen in the water would combine with the carbon and cause face corrosion. At the moment I am thinking a very light clear oil (clear mechanical oil or clock oil perhaps?). I am a little reluctant to use water because of the rusting issues that will occur when the seal leaks (hopefully not for a long long time). As an alternative water with some anti rust ingredient as used in central heating systems may also be a possibility. This is the problem - I just don't know what to use for the best.  As they say ' I used to be indecisive - but now I'm not so sure'  :Doh:

Many Thanks

Best Regards

picclock

Noitoen:
Silicone carbide mechanical seals are more tolerant to running dry.

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