Lydall, Inc. (Lydall) along with its subsidiaries, design and manufacture 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 three segments: Performance Materials, Thermal/Acoustical Metals and Thermal/Acoustical Fibers. The Performance Materials segment reports the results of the Industrial Filtration, Industrial Thermal Insulation and Life Sciences Filtration businesses. The Thermal/Acoustical Metals segment reports the results of Lydall's automotive business, which includes metal parts and related tooling. The Thermal/Acoustical Fibers segment reports the results of Lydall's automotive business, which includes fiber parts and related tooling. Other Products and Services (OPS) include Life Sciences Vital Fluids.