Re: [APD] Eheim Leaks

["S. Hieber" <shieber at yahoo_com>]

Natural rubber and some synthetic latexes yield somewhat readily to petroleum jelly and other petroleum compounds; other "rubber" products not so much. I don't know if the eheim o-rings are neoprene, which has excellent oil *resistance*, or another blend of compounds.

Ehiem used to enclose a little tube of petro jelly with some of their filters. 

It's sort of like, if you never let your light bulb be exposed to temps outside of 40F-80F, it can last longer; but who cares since it will be worthless for other reasons before that matters much.

sh


----- Original Message ----
From: Richard J. Sexton <richard at aquaria_net>
To: aquatic plants digest <aquatic-plants at actwin_com>
Sent: Wednesday, April 18, 2007 12:04:58 PM
Subject: Re: [APD] Eheim Leaks


At 08:16 AM 4/18/07 -0700, you wrote:
>I actually haven't found that petroleum jelly makes a significant diff in
the live of the Eheim o-rings.

Vasoline will cause rubber to swell and then dissolve. But aren't the Eheim
seals neoprene (which won't) ?


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