The ACD's unique sleeve is a co-molded element comprised of an enhanced urethane matrix reinforced with a durable polytetrafluoroethylene (PTFE) inner shell. As the sealing sleeve wears, pressure is actively applied to force the element against the drill pipe to maintain consistent seal performance. The device varies hydraulic pressure on the seal to compensate for wear and accommodate passage of wear-inducing tool joints. RCDs do not have the ability to be adjusted in-situ to prolong seal integrity. Service life and performance of the ACD is further enhanced by the greater durability of the co-molded element and lubrication of the seal with clean drilling mud. Active pressure sealing is a significant advance over MPD operations that degrade the performance of passive RCD elastomer seals. The device varies hydraulic pressure on the seal to compensate for wear and accommodate passage of wear inducing tool joints. The active seal results in a stripping capacity that exceeds conventional RCD sealing elements. The adjustable active pressure system uses field-proven BOP technology—no bearing or wear sleeve required, ultimately offering repeatable performance.