Apparatus for sealing cryovial

An apparatus includes a holder; a first motor operatively secured to holder; a transporting assembly including a second motor and a slide; a heating unit; a controller; and a housing for enclosing the transporting assembly and the heating unit; A thermally contractible film is put on a closed cryovial containing biological specimens. The cryovial is secured to the holder such that activating the second motor to move the first motor and the holder from an original position to a heating position, stopping the second motor and activating the first motor to turn the holder about a length axis of the cryovial, activating the heating unit to heat the thermally contractible film and contracting same onto the cryovial, and activating the second motor again to move the first motor and the holder from the heating position to the original position will produce a sealed cryovial.