Centering rings are usually assembled with FKM Oring for sealing the connection between two vacuum flanges together with claws or clamps. CME offers various standard centering rings for use in different applications. 

＊Size: KF10 to ISO250 
＊Standard Material: 
   Centering ring: 304 stainless steel. Other materials available upon request. 
   O-ring: FKM
   Outer ring: Aluminum

＊ Seal Temperature Range: -5°C – 204°C / 23°F - 399°F