---
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: "€ 31.35"
currency: EUR
in_stock: true
url: https://www.desertcart.hr/products/643912097-captain-o-ring-replacement-a20063-a20064-orings-for-fluval-304
store_origin: HR
region: Croatia
---

# Precision fit for Fluval 304-407 Durable leak-proof seal Proudly USA assembled 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:** € 31.35
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal the deal with Captain O-Ring – 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?** € 31.35 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/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

- • **Made in the USA:** Proudly assembled domestically, supporting local craftsmanship and quality standards millennial professionals value.
- • **Dual-Pack Convenience:** Includes two o-rings so you’re always prepared—replace now and keep a spare for future peace of mind.
- • **Leak-Proof Reliability:** Crafted from premium materials to prevent leaks and maintain optimal filter pressure, protecting your aquatic ecosystem.
- • **Trusted Quality Assurance:** Manufactured and warrantied by Captain O-Ring LLC, guaranteeing durability and long-lasting performance.
- • **Fluval-Compatible Precision:** Engineered to perfectly seal motor heads on Fluval 304-307 & 404-407 canister filters, ensuring flawless performance.

## Overview

The Captain O-Ring Replacement A20063/A20064 2-pack offers a precision-engineered, leak-proof seal for Fluval 304-307 and 404-407 canister filter motor heads. Manufactured in the USA by Captain O-Ring LLC, these durable o-rings ensure reliable performance and come with a warranty, providing savvy aquarium owners with peace of mind and a ready spare for future maintenance.

## Description

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)

## 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 |
|---------------|-------|
| Package Dimensions | 12.7 x 12.7 x 2.21 cm; 32 g |
| Item model number | A20063 O-Ring |
| Quantity | 1 |
| batteries required | No |
| Batteries Included | No |
| Item Weight | 32 g |

## 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/516kyacp9YL.jpg)

## 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

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**Shop now:** [https://www.desertcart.hr/products/643912097-captain-o-ring-replacement-a20063-a20064-orings-for-fluval-304](https://www.desertcart.hr/products/643912097-captain-o-ring-replacement-a20063-a20064-orings-for-fluval-304)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-05-19*