HAMPTON, England (Aug. 8)—Wellington Holdings P.L.C. has completed a $1 million expansion project at its CDI Seals plant in Houston, raising output 50 percent to meet rising demand from oil, gas and chemical industries in the U.S. Over the past 12 months, the firm has added space and tooling at the CDI facility, which manufactures composite seals incorporating elastomer, plastics and metal components, according to Wellington. The expansion gives CDI additional capacity for further growth, said Wellington CEO Peter Bennett. "Strong global demand for Wellington's energy-related specialist seals, including those made by CDI, has supported investment in this exciting sector," Bennett said in a company statement. With annual sales of about $40 million, the British group also includes Hallite Seals, which makes hydraulic and pneumatic sales, and Hallite Polytek, a maker of specialized seals for the oil, aerospace and process industries. Wellington also owns Dynamic Seals of Detroit, which makes hydraulic seals for mobile equipment.