Green o rings are hydrogenated Nitrile, also known as highly saturated Nitrile, or more commonly known as HNBR. These o-rings are made of HNBR rubber material which is resistant to high temperatures, oil, water, gas, alcohol solvents and high pressure. HNBR can be formulated to meet application temperatures ranging between -45 degrees Celsius and 165 degrees Celsius.
watch gaskets are made of specialty rubber or neoprene, and sometimes from plastic for crystals. Watches have gaskets because they protect your watch from things like dust, water, perfume, oils, dirt, and other residues that wristwatches and pocket watches are exposed to. By protecting your watch’s precision mechanical and electrical components from moisture and dirt with gaskets you will dramatically increase the life expectancy of your watch.
