Straub Couplings are the easiest way to join pipes of all materials. They require no special tools or pipe-end preparation. Flexible, lightweight, 316SS construction; Straub Couplings handle pipe-misalignment, vibration, and are used in shipbuilding, wastewater treatment, general industry, and construction. They will replace welded, flanged, threaded, or grooved type pipe joints. Straub, Hi-Performance Pipe Couplings, are the 21st Century way to join pipes. Available in diameters from 1" to 120".