Rubber pipe couplers serve the purpose of joining two rubber pipes or hoses. They come in different designs like sleeve type couplers which are put over the ends of the two pipes and then secured using clamps, and flanged couplers which use bolts to join the flanges on the ends of the pipes. Pipe couplers are rubber made, and so they are useful in many applications like plumbing systems for connecting pipes, irrigation systems for joining hoses, and in industrial applications for joining rubber pipes that carry fluids or gases