The trade name of Gilsulate has been around for over 50 years. The first formulation of Gilsulate was trademarked and patented in 1943 during World War II and the first application was in Bonanza, Utah. Gilsulate was first marketed commercially in 1951 and by 1956 it covered 400 miles of underground pipes. The current formulation of Gilsulate was federally approved and patented in 1978. In 1982 large scale thermal and hyrdrostatic head testing proved that Gilsulate could successfully perform in extended temperature range systems up to to 800°F.
Gilsulate International, Inc. acquired Florida-based American Thermal Products on March 1, 2004. Gilsulate International moved the corporate offices to Santa Clarita, California but has maintained the existing sales structure. Sales are made through a network of independent Sales Representatives throughout the United States as well as through authorized distributors. In addition, Gilsulate International has brought on the assistance of an International Representative to handle international sales. Also worth note, Gilsulate International, Inc. is a women-owned and operated business.
The main application of Gilsulate is for the insulation and protection of underground pipes and tanks. Markets include colleges, universities, hospitals, governmental facilities, refineries, power plants, food and beverage, pulp and paper, pharmaceutical and other facilities that have requirements for underground systems. Applications include (but are not limited to) steam, condensate, hot water, chilled water, domestic water, fuel oil, petrochemicals, molten sulphur, asphalt and superheated hot water.
Gilsulate is a dry, granular material formulated from a proprietary and patented blend of minerals specially treated to be hydrophobic and engineered to form a tight matrix of multi-sized particles. This formulation creates a seamless, load-bearing material (up to 12,000 pounds per square foot) that isolates and insulates the underground pipes from harsh underground environments such as high water tables and wet and corrosive soils.