Abstract: A pressure flange is provided for installing toilets. The pressure flange includes a sealing ring disposed so as to make direct contact with a bottom of a toilet base. A rigid main column is configured to connect the toilet to a sewer line in a bathroom facility, with the column having an upper tube section with a larger inner diameter section above a vertical tube section having a smaller inner diameter. The column has an oval shaped collar at a top of the upper tube section, with the collar having oppositely extending ears. A flex-line type pressure gasket is disposed around at least the vertical tube section of the column.