--- product_id: 643912097 title: "Captain O-Ring – Replacement A20063 A20064 Orings for Fluval 304, 305, 306, 307, 404, 405, 406, 407 Canister Filter Motor Head Lid Seal Ring (2 Pack)" brand: "captain o-ring" price: "125.35 DT" currency: TND in_stock: true reviews_count: 5 category: "Captain O Ring" url: https://www.desertcart.tn/products/643912097-captain-o-ring-replacement-a20063-a20064-orings-for-fluval-304 store_origin: TN region: Tunisia --- # 2-pack precision fit leak-proof seal USA assembled quality Captain O-Ring – Replacement A20063 A20064 Orings for Fluval 304, 305, 306, 307, 404, 405, 406, 407 Canister Filter Motor Head Lid Seal Ring (2 Pack) **Brand:** captain o-ring **Price:** 125.35 DT **Availability:** βœ… In Stock ## Summary > πŸ”© Seal the deal with confidence – never let leaks cramp your aquatic vibe! ## Quick Answers - **What is this?** Captain O-Ring – Replacement A20063 A20064 Orings for Fluval 304, 305, 306, 307, 404, 405, 406, 407 Canister Filter Motor Head Lid Seal Ring (2 Pack) by captain o-ring - **How much does it cost?** 125.35 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/643912097-captain-o-ring-replacement-a20063-a20064-orings-for-fluval-304) ## Best For - captain o-ring enthusiasts ## Why This Product - Trusted captain o-ring brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Leak-Proof Seal:** Restores your filter’s motor head lid seal to prevent leaks and maintain optimal performance. - β€’ **Proudly USA Made:** Crafted and warrantied by Captain O-Ring LLC, guaranteeing top-tier quality and durability. - β€’ **Easy Installation:** User-friendly design means no hassle, just quick and secure replacement to keep your aquarium running smoothly. - β€’ **Fluval Compatibility:** Perfectly engineered to fit Fluval 304-307 & 404-407 canister filters, ensuring seamless integration. - β€’ **Dual-Pack Reliability:** Two premium A20063/A20064 o-rings for immediate replacement and backup peace of mind. ## Overview Captain O-Ring’s Replacement A20063/A20064 O-Rings come as a 2-pack designed specifically for Fluval 304-307 and 404-407 canister filters. These durable rubber seals ensure a leak-proof motor head lid connection, are easy to install, and are proudly assembled in the USA by Captain O-Ring LLC, offering reliable performance and peace of mind for aquarium enthusiasts. ## Description Replace your old, worn, leaking motor head seal with Captain O-Ring’s replacement A20063/A20064 o-rings. Compatible with Fluval 304, 305, 306, 307, 404, 405, 406, 407 Canister Filters. Pack contains two (2) o-rings. Replace your leaking o-ring and have a spare on hand for the future with this handy 2-pack. Manufactured and warrantied by Captain O-Ring LLC. Proudly assembled in the USA! Review: Worked perfectly. - Product worked perfectly. Easy to install. No leaks! Review: Works - Work gteeat ## Features - O-Ring Part Number: A20063 / A20064 (2 Pack) [also called A-20063 / A-20064] - Compatible with Fluval 304, 305, 306, 307, 404, 405, 406, 407 Canister Filters. - The A20063 o-ring seals the motor head/lid to the filter canister of the models listed above. - Contains two (2) o-rings (also called seals or gaskets). Replace your leaking o-ring and have a spare on hand for the future with this handy 2-pack. - Manufactured and warrantied by Captain O-Ring LLC. Proudly assembled in the USA! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CJSW1QS1 | | Best Sellers Rank | #77,717 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #83 in Faucet O-Rings | | Brand Name | Captain O-Ring | | Color | Black | | Customer Reviews | 4.6 out of 5 stars 173 Reviews | | Manufacturer | Captain O-Ring LLC | | Material | Rubber | | Material Type | Rubber | | Model | A20063 O-Ring | | Number of Items | 2 | | Number of Pieces | 2 | | Part Number | A20063 | | Set Name | Replacement A20063/A20064 O-Ring Set (2 Pack) | | UPC | 810061941422 | | Unit Count | 2.0 Count | ## Product Details - **Brand:** Captain O-Ring - **Color:** Black - **Manufacturer:** Captain O-Ring LLC - **Material:** Rubber - **UPC:** 810061941422 ## Images ![Captain O-Ring – Replacement A20063 A20064 Orings for Fluval 304, 305, 306, 307, 404, 405, 406, 407 Canister Filter Motor Head Lid Seal Ring (2 Pack) - Image 1](https://m.media-amazon.com/images/I/31jpsSUxHPL.jpg) ![Captain O-Ring – Replacement A20063 A20064 Orings for Fluval 304, 305, 306, 307, 404, 405, 406, 407 Canister Filter Motor Head Lid Seal Ring (2 Pack) - Image 2](https://m.media-amazon.com/images/I/51F-Dw8SpRL.jpg) ![Captain O-Ring – Replacement A20063 A20064 Orings for Fluval 304, 305, 306, 307, 404, 405, 406, 407 Canister Filter Motor Head Lid Seal Ring (2 Pack) - Image 3](https://m.media-amazon.com/images/I/41rQ2Fhbn-L.jpg) ![Captain O-Ring – Replacement A20063 A20064 Orings for Fluval 304, 305, 306, 307, 404, 405, 406, 407 Canister Filter Motor Head Lid Seal Ring (2 Pack) - Image 4](https://m.media-amazon.com/images/I/41apa-r-wML.jpg) ![Captain O-Ring – Replacement A20063 A20064 Orings for Fluval 304, 305, 306, 307, 404, 405, 406, 407 Canister Filter Motor Head Lid Seal Ring (2 Pack) - Image 5](https://m.media-amazon.com/images/I/51svtq5lZnL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worked perfectly. *by R***B on 8 May 2026* Product worked perfectly. Easy to install. No leaks! ### ⭐⭐⭐⭐⭐ Works *by S***. on 27 February 2026* Work gteeat ### ⭐⭐⭐⭐⭐ Exact fit, cant go wrong *by U***0 on 4 March 2026* 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 ## Frequently Bought Together - Captain O-Ring – Replacement A20063 A20064 Orings for Fluval 304, 305, 306, 307, 404, 405, 406, 407 Canister Filter Motor Head Lid Seal Ring (2 Pack) - Fluval A20061 X06 AquaStop Valve - Fluval Ribbed Hosing for 306/307 - 406/407 9.8Ft A20015 --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/643912097-captain-o-ring-replacement-a20063-a20064-orings-for-fluval-304](https://www.desertcart.tn/products/643912097-captain-o-ring-replacement-a20063-a20064-orings-for-fluval-304) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-14*