HagenKB

Fluval External seal leak

My Fluval External Filter seems to be leaking from around the seal?

My Fluval External Filter seems to be leaking from around the seal?
More often than not the cause of the leak can be directly attributed to the seal ring as it has become dry and void of lubricant. Ideally, the regular use of Fluval Silicone Lubricant will keep the seal ring supple and extend its life for a proper seal. Do Not use Vaseline as this will impede a perfect seal and can lead to leaking.
If a proper seal cannot be achieved by the application of the silicon lubricant the seal ring may have been cracked or stretched slightly warranting a new seal ring. Prior to closing the filter it is important to always inspect the seal ring and the groove in which it sits and the interior of the filter case for debris such as substrate as this will also break the seal.

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