Fluval Motor Seal Ring 304/404

Overview

The Fluval Motor Seal Ring for 304/404 canister filters is a genuine replacement gasket designed to maintain a watertight seal between the motor head and the filter canister. Over time, the original seal ring can become flattened, brittle, or cracked, leading to leaks, loss of prime, or reduced performance.

Replacing the worn seal with a new motor seal ring helps restore proper pressure, prevents water seepage, and keeps your Fluval 304 or 404 running safely and efficiently.

Product Specifications

• Compatibility:

  • Fluval 304 External Canister Filter

  • Fluval 404 External Canister Filter

• Part Type: Motor head seal ring / main gasket

• Function:

  • Provides a waterproof seal between canister and motor head

  • Helps maintain prime and internal pressure

• Material: Flexible, durable rubber gasket suitable for continuous aquatic use

• Installation:

  • Remove motor head

  • Take off old seal ring and clean groove

  • Seat new seal ring evenly in the groove before reattaching motor head

Key Features

• Genuine Fluval replacement motor seal ring

• Helps prevent leaks and loss of prime

• Restores proper performance to aging 304/404 filters

• Easy to install as part of routine maintenance

• Recommended whenever the filter is leaking, difficult to prime, or during major overhauls