Our Suja Rubber O Ring Silicone is mainly for industrial purposes. It can be used in a wide range of industries and applications, including automotive, because of its unique qualities. This is also used in fuel and brake systems, automobile air conditioning systems, engines, and transmission parts to seal fluids, lubricants, and coolants. It is an odorless, non-toxic, and food-grade ring. Military and aviation also use our O Ring Silicone as it is made with good quality silicon in 2 mm of size.