Aspects and embodiments directed to cervical seals are disclosed. In one embodiment, a cervical seal having adjustable length comprises a first portion and a second portion, each configured to receive an elongated central member, a length of the cervical seal corresponding to a distance between the first portion and the second portion. The cervical seal further comprises a membrane coupled to the first portion and the second portion and extending along the length of the cervical seal, wherein the first portion is movable from a first position along the elongated central member to a second position along the elongated central member, so as to change the length of the cervical seal and the membrane is configured so that a radial profile of the membrane increases in response to increasing the length of the cervical seal, so as to provide a conformable cervical seal.
