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🛠️ Seal the deal with Captain O-Ring – because your aquarium deserves the best!
Captain O-Ring’s A20063/A20064 replacement o-rings provide a perfect, leak-proof seal for Fluval 304-407 canister filter motor heads. Sold in a convenient 2-pack, these durable, USA-assembled seals come warrantied by the manufacturer, ensuring reliable performance and peace of mind for aquarium enthusiasts.




| ASIN | B0CJSW1QS1 |
| ASIN | B0CJSW1QS1 |
| Best Sellers Rank | #29,874 in Pet Supplies ( See Top 100 in Pet Supplies ) #303 in Aquarium Filter Accessories |
| Brand Name | Captain O-Ring |
| Color | Black |
| Customer Reviews | 4.5 4.5 out of 5 stars (146) |
| Date First Available | September 1, 2023 |
| Date First Available | September 1, 2023 |
| Department | Unisex, All Ages |
| Department | Unisex, All Ages |
| Item Package Dimensions L x W x H | 5 x 5 x 0.87 inches |
| Item Weight | 1.13 ounces |
| Item model number | A20063 O-Ring |
| Item model number | A20063 O-Ring |
| Manufacturer | Captain O-Ring LLC |
| Manufacturer | Captain O-Ring LLC |
| Material | O-Ring |
| Package Dimensions | 5 x 5 x 0.87 inches; 1.13 ounces |
| Target Audience Keyword | fish |
| Warranty Description | Manufactured and warrantied by Captain O-Ring LLC |
U**0
Exact fit, cant go wrong
Capital rings are great I have a fluvall 407 and a 107 and purchase the o-rings for both The nice thing is is you get two o-rings per package so even in the event that the factory one fails you still have a second backup they fit like a charm just remember to put some o-ring grease that's not petroleum based look for food safe Billy skin actually makes a food safe and food contact o-ring lubricant comes in a tube and pretty well priced these will be my go-to from here on out I've had to change one o-ring on each pump and I still have an extra one left over at their price it's a steal it's definitely worth having o-rings and replacing them every once in awhile than having a flooded house and dead creatures
J**N
Fluval o trying package
The O-ring worked however I was confused because not both numbers were on the label
A**O
Great replacement
These O-rings are a great fit and replacement part for the Fluval 307 and 407 cannister filters. Whenever I do filter maintenance every 3 months I change out the O-rings. Filter has never leaked or given me issues on fitment.
D**.
Barato y se ajusta bien. Debería venir lubricado.
D**M
Arrived in 2 days.
As advertised
E**.
Exactly what you're looking for
Oem fit. Not much else to say. Came pre lubed; would recommend adding a little more.
M**C
Saved me from throwing out my filter
Excellent. Stopped my leak!
U**O
Exactly what it’s supposed to be
This is a replacement part, it’s exactly what it’s supposed to be. There’s not much more commentsthan that. It works.
S**.
Work gteeat
Trustpilot
5 days ago
1 month ago