Replacement Pump Head O-Ring for Aqua One Ocellaris 3000 / 3000 UVC Canister Filters
This seal sits between the pump head and filter body, helping maintain a watertight seal and prevent leaks. A worn, flattened or damaged O-ring can lead to water seepage around the pump head and should be replaced when necessary.
Key Features
- Genuine-style replacement pump head seal
- Suits Aqua One Ocellaris 3000
- Suits Aqua One Ocellaris 3000 UVC
| Product Type | Pump Head O-Ring |
|---|---|
| Compatible Models | Ocellaris 3000, Ocellaris 3000 UVC |
| Function | Maintains watertight seal between pump head and filter body |
FAQ
Is this O-ring compatible with both the Ocellaris 3000 and Ocellaris 3000 UVC models?
Yes, this O-ring is designed to fit both the Aqua One Ocellaris 3000 and Ocellaris 3000 UVC canister filters.
How do I know when to replace the O-ring in my pump head?
Replace the O-ring if you notice water seepage around the pump head, or if the seal appears flattened, cracked, or damaged.
Does this O-ring come with any additional tools or installation instructions?
Please contact customer service

Carl Sharp –
Fitted the O-ring easily and immediately stopped the water leak. Works perfectly with both my Ocellaris 3000 and 3000 UVC models. No issues so far after two weeks of use.
Lucas Hart –
The replacement was straightforward. The seal fits snugly and the filter now holds water without any seepage. Slightly harder to install than the original, but still manageable.
Joseph Dickens –
After a few months of use, the original O-ring started leaking. Replaced it with this one and the problem is completely gone. It feels like a genuine part and matches the original perfectly.