A.W. Chesterton Company

A.W. Chesterton Company, founded in 1884 and headquartered in Groveland, Massachusetts, is a global manufacturer of industrial sealing, lubrication, protective coating, and equipment monitoring solutions with over 140 years of continuous operation. The company operates through more than 500 sales and service locations across 113 countries, supported by 1,200 factory-trained specialists. Chesterton's mechanical seal range includes the 442/442HP split seal for large rotating equipment, the 442C cartridge split seal, the 150/150L and 155 general-duty single cartridge seals, the 180 heavy-duty single cartridge, the 225 and 255 tandem and standard double cartridge seals, the 250/250L and 280 double cartridge seals, slurry seals including the 170 and 170L for Weir Warman AH pumps, gas seals, and the 4400 double concentric gas seal. Their packing line spans pump and agitator packing (1600 graphite, 1622 low-emission, 377 CarbMax carbon fiber, 1760 chemical, 1830 graphite-PTFE), valve packing (6800 LowE, 1724 PTFE, 5150 live-loading), and gasket materials (184 expanded PTFE, 359 graphite, 450 synthetic, 457 carbon fiber, 459 nickel-reinforced graphite). ARC industrial coatings provide erosion, corrosion, and chemical resistance for metal infrastructure along with concrete resurfacing and structural repair composites. The Chesterton Connect IIoT platform delivers pump monitoring sensors and remote accessibility for predictive maintenance. Markets served include fossil, geothermal, hydro, and nuclear power; oil and gas; chemical; food and beverage; metals and mining; pharmaceutical; pulp and paper; refining; and water and wastewater treatment.