Turcon® Roto L from Trelleborg Sealing Solutions is featured in this video. It is the first ever active seal that seals only when required. This reduces energy consumption and increases seal-life dramatically. In central tire inflation systems for example Turcon® Roto L seals only when the tire is pressurized. Nearly zero friction at no pressure and extremely low friction under pressure load makes tire pressurization on the go a reality. Turcon® Roto L seal from Trelleborg Sealing Solutions saves energy with no friction.
Turcon® Roto L Rotary Seal - Energy Saving with no Friction