Abstract: A plasmapheresis centrifuge bowl comprises a ring-shaped dynamic sealing assembly having a ring-shaped static frictional assembly and a ring-shaped rotary frictional upper cover, both of which have a sealing surface. A dynamic seal can be provided between the contacting portions of the sealing surfaces of the ring-shaped static frictional assembly and the ring-shaped rotary frictional upper cover. The ring-shaped static frictional assembly comprises a ring-shaped ceramic piece. A ring-shaped frictional area is provided on the ring-shaped rotary frictional upper cover, and the heat transfer rate of the ring-shaped frictional area is less than the heat transfer rate of the ring-shaped ceramic piece. When the plasmapheresis centrifuge bowl of the present invention is operated to treat the blood, the heat generated by the friction can be conducted and dissipated into the air via the ring-shaped ceramic piece.