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rgulrich · 07/03/2015, 05:36 AM

Have you tried our good friend "Google"? I think you'll be able to find something close to the size you're looking for form one of the array of places selling o-rings. If not, you could always try to make a flat washer set out of a piece of silicone sheet picked up from Amazon or someplace. I'm just not too good at using scissors for such, and you really don't want to see my X-acto knife work on silicone. Functional, but not pretty.

In a last ditch effort, break out the tube of aquarium sealant and run a bead inside both sides of bulkhead (replacing the o-rings), seat, tighten, and let it cure for 24 hours. You'd have to keep your sump and aquarium circulating separately while it cures, but as it's not really a pressure seal, you shouldn't have too much of a problem with it leaking from that point forward. If you ever tighten or loosen the that connection, however, it will break that seal.

Hope that helps a bit.
Cheers,
Ray

07/03/2015, 05:36 AM	#2
rgulrich greybeard Join Date: Jun 2007 Location: MD Posts: 893	Have you tried our good friend "Google"? I think you'll be able to find something close to the size you're looking for form one of the array of places selling o-rings. If not, you could always try to make a flat washer set out of a piece of silicone sheet picked up from Amazon or someplace. I'm just not too good at using scissors for such, and you really don't want to see my X-acto knife work on silicone. Functional, but not pretty. In a last ditch effort, break out the tube of aquarium sealant and run a bead inside both sides of bulkhead (replacing the o-rings), seat, tighten, and let it cure for 24 hours. You'd have to keep your sump and aquarium circulating separately while it cures, but as it's not really a pressure seal, you shouldn't have too much of a problem with it leaking from that point forward. If you ever tighten or loosen the that connection, however, it will break that seal. Hope that helps a bit. Cheers, Ray __________________ The true sign of intelligence is not knowledge but imagination. Albert Einstein Current Tank Info: 360 degree walk around 300 DD island–4 300W & 2 165W ViparSpectra, 4 Kessil A350W, 2 A360WE, 3 XF150, 1 XF250, 1 XF350 Gyre along with 2 PP40 and 2 IceCap 3K gyre for robust current. Basement 150 gallon RubberMaid sump, SKIMZ skimmer, DCP18000