This standard specifies the dimensions of "O"-shaped rubber sealing rings for vacuum rubber sealing flat flanges. This standard is applicable to "O"-shaped rubber sealing rings used for rubber-sealed flat flange connections in vacuum systems with a pressure of 10^(5)~10^(-5)Pa.
SJ/T 10161.7-1991 history
1991SJ/T 10161.7-1991 Vacuum rubber seal plane flanges.Dimensions of “O”rubber sealing rings