Proco Products, Inc. is the global leader in the design and supply of expansion joints and rubber expansion joints for piping and ducting systems. For over 35 years, Proco has prided themselves on offering the most complete line of products to suit a variety of applications. Although our primary focus is rubber and molded PTFE expansion joints for industrial pumps, piping systems and ducting systems, Proco also offers braided flexible hose assemblies, and pipe penetration seals.