Comments: It's an o-ring. It holds the cup where it is supposed to be just fine. But, if you are using ozone, buna o-rings like this one will not last long. I bought 3 and in 3 weeks they had all broken. Go with a silicone o-ring if your system uses ozone.

Comments: Perfect fit for my Remora Pro Hang on Skimmer. Thanks!

Comments: Does exactly what it is supposed to do!

Comments: I usually buy three of these at a time, because even though I give them a light coating of petroleum jelly (per their instructions) they still only seem to last about 4-6 months before they break.
<br />But they do the job.

Comments: AquaC O-Ring fit's great.And the price was Great.
<br />Thank MarineDepot

Comments: The ring that came with my aquac died of dry rot within only 3 months. I rigged up another way to adjust the collection cup using velcro but honestly I missed the ease and clean look of using the o-ring for adjustment so I ordered 3 more of these with an order I was already going to place. Consiter them disposable but at least they are cheap...

Comments: What can I say, it's an O-ring. I purchased one of the original Remoras and it used a set screw to keep the collection cup in place. This O-ring works better, but they do wear out, especially since the corners on the collection cup are sharp. AquaC should shave the edges of the acrylic down so they aren't so sharp and don't wear on the rubber O-rings so much.

Comments: Nothing to say O-Rings fit my AquaC Remora Skimmer. I do not use any oil its easier just to buy a new one from time to time.

Comments: Seems to be an exact replacement for the stock o-ring that comes with the Remora - it fit perfectly on the collection cup. It also appears to be sturdy and free of defects. Other than that, well, it's an o-ring. Not much to say about it.
<br /> This time I coated the ring with a small amount of petroleum jelly, as recommended by AquaC. Hopefully that'll prevent the ring from cracking (didn't do that with the original o-ring that came with my Remora.)
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Comments: Seems stronger than the orginal O ring that shipped with the Remora protein skimmer. Had to stretch it a little first time you use it, but fits nice now.

Comments: The original O-ring that came with the Remora Pro is still in great condition I purchased an additional for a back-up.

Comments: Stock replacement, works as it should.

Comments: It is was it is

Comments: Um...Um...its a replacement ring, it did what it was supposed to. no mystery here just get it if you need it lol

Comments: Coat the O-Ring with vaseline before using to prolong use.