For 140 years, Chesterton has been a world leader in helping process industry companies and manufacturers improve the reliability and efficiency of their process platforms. We are known across a wide range of industries for our award-winning pump and valve sealing solutions, applications expertise, equipment maintenance and wear-prevention products, and knowledgeable hands-on local service. Our product lines include mechanical seals and packing, hydraulic and pneumatic seals, industrial lubricants, MRO chemicals, composite coatings and condition monitoring sensors.​​​Year ​Founded: 1884 in Boston, Massachusetts Headquarters: Groveland, Massachusetts, USA (north of Boston)​​Employees: Over 1,100 in 27 Countries Sales Offices: 113 Countries​​​​