Signs and Symptoms. Because the signs of AS can be similar to those of other behavioral problems, it's best to let a doctor or other health professional evaluate a child's symptoms. Many kids are diagnosed with attention deficit hyperactivity disorder (ADHD) before a diagnosis of AS is made later.
Rubber begins to melt at approximately 180 degrees Celsius. At low temperatures, around 5 C to 6 C, there is a risk that rubber hardens because of crystallization. The optimum temperature for rubber is 20 C.
Natural rubber is fairly easy to process. It has good low temperature properties, excellent elongation and a high resistance to tears and abrasions. Its useful temperature range is between -60ÂºF and + 170ÂºF, and it can be easily bonded to metal.