This compression 90-degree male elbow is for connecting and disconnecting tubes to a NPT thread pipe or fitting at a 90-degree angle, which is made of 316L stainless steel for higher strength and greater corrosion resistance than 304ss. This fitting has hex nut construction for tighter, leak-free connections. It is compatible with stainless steel, copper, rigid and semi-rigid plastic tubing, but is not recommended for soft tubing. It is suitable for use in chemical, petroleum, power generation, laboratory, and medical device plants.