The Stanelle CONNEX pipe coupling system is designed for maximum economy in the sealing and joining of conveyor pipelines. Conveyor pipelines for the pneumatic conveying of bulk materials are subject to heavy wear. Flanged joints, with their seals and off-center construction, create turbulence and thus added wear. The CONNEX pipe couplings center the pipes offset- and vortex-free and the exterior gaskets seal the pipeline tightly. An inlaid stainless steel tape ensures potential equalization against the build-up of static electricity.