AES Engineering is one of the major specialists in the design and manufacture of mechanical seals and support systems. Mechanical seals are used in pumps and rotating equipment to prevent liquids and gases from escaping into the environment. The customer base is the paper, water, mining, pharmaceutical and petrochemical sectors worldwide and the current range of products is also expanding to cover new markets and niches.

AES has consistently delivered to its own ambitious growth forecasts meeting or exceeding budgets every year since 3i invested and it has been the only major international new entrant to the mechanical seals industry in the last twenty years.