This standard specifies the dimensions of vacuum rubber sealing flat rotating flanges. This standard is applicable to rubber-sealed rotating flanges matched with clamping flanges in vacuum systems with a pressure of 10^(5)~10-^(-5)pa.
SJ/T 10161.4-1991 history
1991SJ/T 10161.4-1991 Vacuum rubber seal plane flanges.Dimensions of rotable flanges