Hydraulic/Pneumatic Division is a world wide manufacturer and distributor of the highest performing sealing devices including seals, wipers/excluders, bearing bands, o-rings and kits for a wide range of applications. Our products and technical services are second to none. We have thousands and thousands of existing seal designs in a wide range of materials, sizes and profiles. Plus, we pride ourselves on our ability to provide custom engineered solutions to even your toughest sealing requirements in many cases shipped to you overnight! Chesterton is headquartered in Stone ham, Massachusetts with manufacturing facilities around the state and through out the world. Products are stocked, sold and serviced by highly trained Chesterton Specialists in over 97 countries world wide. This extensive network provides you with the best applications assistance and service available through out the industry. A combination of our unique, high performance materials, the expertise of your local Chesterton Technical Specialist and the support of our engineering staff will enable you to enjoy significantly reduced operating costs, increased reliability and years of trouble free service.