Elastomer Engineering Ltd was founded in 1966 and has unrivalled experience in the design and production of high quality rubber mouldings, rubber-to-metal bondings and rubber-textile components. We have assisted in the development of innovative products that we have subsequently supplied to major customers, including the MOD, BICC (Pirelli), Pilkington, Schlumberger, Teledyne, the Weir Group and Westland Helicopters. The aim of this project is to develop the most technologically advanced fine bubble diffuser for the treatment of sewage wastewater at a price that is competitive with similar but often poorly performing products. Fine bubble diffusers deliver a stream of air bubbles to sewage wastewater collected in large tanks or allowed to flow slowly along channels, enabling aerobic bacteria to break down the toxic impurities present so that the purified and oxygenated effluent may be returned to the environment. There are many varieties of commercially available rubber/plastic fine bubble diffusers and their simple design belies the very important scientific parameters that determine their efficiency and working life. Large urban wastewater treatment plants typically require around 15,000 diffusers and unit costs are naturally of prime consideration when selecting equipment. However, less consideration seems to have been given to energy efficiency and extended product life. We have noted many instances of appalling basic design and the use of unsuitable materials with little attention being given to the essential distribution of bubbles as they rise through the wastewater being treated. There is firm evidence that in many cases the inferior quality of the rubber diaphragm contributes to early failure and consequent higher costs. Elastomer aim to develop diffusers that offer significantly improved performance combined with greater longevity. This will result in lower operating costs as well as reducing the amount of energy consumed.