HOUSTON (June 17, 2014) – Pure terephthalic acid (PTA) is a pre-product of polyester that is used in great amounts to manufacture textiles and PET bottles. The increasing need for PTA has demanded even greater capacities. For a major project, EagleBurgmann delivered what is currently the largest agitator seal, with a 19-inch shaft size (480mm), for use in a new PTA plant in China.