Doesnt require any additonal seals or gaskets. It works flawlessly @ 4.5x10-3 vacuum *TESTED*
Perhaps also suitable for turbo molecular pump may go down up to e-4 e-5 (Not tested @ e-4 and e-5)
ON YOU REQUEST ALSO AVAILABLE in VARIOUS MATERIALS: e.g. INOX, ALUMINUM (SEAL O RING REQUIRED) or PEEK