Avoid using expensive bio-oils, stick to mineral oils and be in compliance with VGP regulations. Upgrade to our renewed Supreme Ventus® stern tube seal during your next dry dock! The Supreme Ventus airtype seal is the seal that guarantees you zero oil-emissions, an absolute minimum of wear and enables you to check the condition of the seal. The new Supreme Ventus uses a vacuum to dispose the leakage and has pressure compensation for every draught. This air flow decreases clogging in the drain pipe. The seal is self-learning and adapts to the amount of leakage.