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Unread 01/02/2022, 01:36 PM   #1
MarineSniper
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Bulkhead gasket question

Setting up a cube I picked up used and when I tested the bulkheads, one was leaking. Removed both and they have gaskets with ridges on one side. Haven't seen these before, mine were always smooth on both, but I can't find a definitive answer as to what side goes to glass. Dan, with Avast Marine says smooth to glass, which I would think but it's about 50/50 and that post was made when Bush II was president

Second question: is there any advantage to that type of gasket, vs the double smooth sided ones I've always used in the past? Been on a 6 year tank hiatus and lots to relearn


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Unread 01/02/2022, 05:27 PM   #2
Vinny Kreyling
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I would agree with Dan.
Advantage???


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Unread 01/05/2022, 01:09 PM   #3
dattack
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All my bulkheads I received, the gasket was originally placed with the ribbed side going towards glass.


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Unread 01/05/2022, 08:37 PM   #4
blowmecius
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Smooth side on glass so it does not bind while tightening.

I would think the ridges account for any inconsistency in the surface of the molded plastic. There is sometimes a line of flash where the 2 halves of the mold meet. I always remove the mold flash with sandpaper before installing.

Glass is pretty flat. Molded plastic not so much.


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Last edited by blowmecius; 01/05/2022 at 08:56 PM.
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