e familiar with it more as a cosmetic surgery term than a material used in merchandise production. But silicone can come in many forms and grades. Some medical grade silicone is being used at your local hospital right now. That girl you just passed on the street... Something looked a little asymmetrical... What was it I wonder? Well, you get my point. Silicone is used in a lot of places. So what is the deal with the silicone used in the popular silicone wristbands? It"s a bonded polymer substance that possesses what the scientists (and very smart laymen) call "elastomeric qualities". These qualities lend the silicone various beneficial traits, such as being both resistant to water and a reasonable amount of heat. Prolonged exposure to the sun will make your silicone wristband sad, as this polymer does not like constant UV exposure. (If your head hurts, don"t worry. The hard part of this article is over. And if it makes you feel better, I almost passed out after writing that). You probably came here because you"re concerned that silicone may not be safe, right? Is this you: "I have kids. Is silicone safe for them to wear all the time? Is there anything toxic in it?" No, imaginary person! Silicone is a very common, safe product. It is free of lead and other harmful toxins. It"s also chemically inert, which means it will not react with other common chemicals your kids may find around your house. If it gets hot, it will not release any harmful fumes and if licked, it won"t transfer anything harmful to the quirky little licker. Silicone is not considered a hazardous waste. This unfortunately does not mean it"s biodegradable. The lifespan of this polymer is extremely long. But on the bright side? Silicone wristbands can be recycled after their lifetime as a fashion accessory has run its course. If you"re still thinking silicone might be too strange and exotic a material for your next merchandise endeavor, I"ll point out this: silicon is a naturally occurring element. It"s abundant in the sand and rocks outside your door. The silicone wristbands are made by the bonding of another pretty natural and accepted element: oxygen. The result may not seem all that natural, but it"s clear that it"s not dangerous and all studies show that it"s perfectly safe. &test111nbsp; rubber-wristbands terials and production process , so the products produced appear performance defects and practical function is reduced . Some customer are holding ready-made products for Soft-hardness comparison directly and then choose one of them . In nowadays the custom silicone bracelets is one of them. So how to choose the hardness for custom silicone bracelets . The choice of softness and hardness of silica gel will have different effects on the properties of different products . At present, the hardness of commonly used silica gel hand rings is between 40 degrees and 60 degrees and material with different hardness has certain difference . For example , the tensile rate of 40 degree materials will reach about 150% , and the tensile rate 60 degree materials can only reach about 80% . So in order to confirm the functionality of products , we have to test them . It is more difficult to produce high hardness silica gel hand ringtest111s . For the manufacturers of silica gel hand rings , the higher the hardness , the higher the defective rate of the products and the pulling force of the products will also be affected and will cause fracture phenomenon at any time . Therefore , we suggest that the hardness of the silica gel hand rings should not be too high .