a seal configured for use in a chiller refrigeration system is provided including a first flange and a second flange . the first flange and the second flange are coaxially aligned and in direct contact . the second flange includes at least one groove within which a first sealing mechanism and a second sealing mechanism are positioned . the first sealing mechanism and the second sealing mechanism are separated by a distance such that a chamber configured to receive a pressurized gas is formed between the first and second sealing mechanisms .