Industrial Syringes are of the disposable type. They are made of plastic with a NBR stopper. The needle comes with a plastic cap for storage between uses. They may be used multiple times for various applications. Due to the large gauge/size of the filling needle, these syringes work well with viscous liquids. The tip of the needle is blunt and flat so that it would not pierce any skin. The needles are non-sterile. They may not be used for injection or any medical purposes.