Simplex – A Century of Product integrity In our second century, SIMPLEX continues to evolve into a global provider of products, services, and engineered solutions designed and manufactured to withstand the rugged environments of the worldwide industrial market. Simplex offers a wide variety of high pressure hydraulic and mechanical products which are widely used in the mining, construction, transportation, manufacturing / MRO, fabricating, energy, power generation and shipbuilding markets. In every market and application, SIMPLEX products and technologies enable the global customer to turn challenges into progress.