Tuthill Coupling Group, comprised of the Hansen, Coupleurs Gromelle and QUICK SEAL brands, provides the worlds best and most complete line of quick coupling solutions and leak testing and filling connectors. Our philo......Tuthill Coupling Group, comprised of the Hansen, Coupleurs Gromelle and QUICK SEAL brands, provides the worlds best and most complete line of quick coupling solutions and leak testing and filling connectors. Our philosophy is to understand our customers values and develop products and processes to exceed their expectations. Our relentless emphasis on employee development results in an organization that is nimble and can execute by delivering quality products backed by great customer service. We believe that having the best people focused on delivering value to the customer will keep us in the forefront of the quick coupling industry. Tuthill Coupling Group offers three brands, Hansen Couplings, Coupleurs Gromelle S.A. and QUICK SEAL. We manufacture a comprehensive range of quick coupling solutions at our Berea, Ohio and Annemasse, France locations. These precision products are widely marketed through a strong network of global distributorships.