Abstract: A transfer sleeve includes a proximal portion defining a proximal channel. The proximal channel has a cross-sectional area that allows a shaft of the delivery system to fit within the proximal channel of the proximal portion. The transfer sleeve also includes a distal portion defining a distal channel. The distal channel has a cross-section area that allows the shaft of the delivery system to fit within the distal channel. Further, the transfer sleeve includes a body portion coupled between the proximal portion and the distal portion and defining a body cavity. The body portion is formed of a compressible material that allows the proximal portion to move axially relative to the distal portion. The body cavity, proximal channel, and distal channel form a fluid tight cavity when the proximal portion is engaged with the shaft of the delivery system and the distal portion is engaged with a capsule.