The Leading Gasket Manufacturers in the UK William Johnston & Company Limited has been manufacturing high quality gaskets for a range of industries for nearly 70 years. This unrivalled experience means that we are now one of the leaders in the U.K. market and our products are used in utilities, construction and engineering projects throughout the world. Headquartered in Glasgow, with a branch in Inverness and having many global customers, 60-70 % of the products we supply are delivered out with Scotland. Although William Johnston & Company Limited has its roots in the UK’s traditional heavy industries and are main suppliers for shipbuilding and ship repair/refit projects in the private and defence sectors, we are currently the largest gasket manufacturers supplying the water, waste water and gas utilities and the pipeline industry in the U.K. where we have long term supply agreements in place. Our niche service is the supply of flange sets comprising pipeline gaskets along with the relevant fasteners in a branded set which provides considerable savings in time, cost and waste for the end user. In addition, bespoke and standard gaskets are manufactured for the pump, valve, engineering, automotive and many other industries.