CSâ€¦/SS series enclosures and the removable gland plates are made of AISI 316L stainless steel with an optional anti-condensate coating. The standard sealing ring is made of black NBR, which is resistant to temperatures between -30Â°C and +100Â°C. The optional red or white SILICON sealing ring is resistant to temperatures between -60Â°C and +200Â°C. The mounting brackets to install the enclosure, the strips and and the mounting frame to install the internal components are all made of stainless steel. All the screws (min.8.8) are made of UNI 7323 class A2/70 stainless steel with a minimum breaking strenght of 700 N/mm2.