Lydall, Inc. (Lydall), along with its subsidiaries, designs and manufactures specialty engineered filtration media, industrial thermal insulating solutions, automotive thermal and acoustical barriers, medical filtration media and devices and biopharmaceutical processing components for thermal/acoustical, filtration/separation and bio/medical applications. The Company operates in two segments: Performance Materials and Thermal/Acoustical. The Performance Materials segment reports the results of the Industrial Filtration, Industrial Thermal Insulation and Life Sciences Filtration businesses. The Thermal/Acoustical segment reports the results of Lydall�s automotive business, which includes Metal parts, Fiber parts and related Tooling. Other Products and Services (OPS) include Life Sciences Vital Fluids. In June 2011, it sold Lydall Industrial Thermal Solutions, Inc. On June 29, 2011, the Company sold its Affinity business.