The disclosure relates to a liner arrangement (1) for a centrifugal pump (2) for processing slurries, the centrifugal pump (2) comprising an impeller and a drive shaft (6) connected with a back portion of the impeller (3). The liner arrangement comprises a back liner (10) arrangeable around at least the back portion of the impeller and around the drive shaft, and a complementary liner (20) arrangeable at the drive shaft and at a central back portion (5) of the impeller (3). The back liner comprises an inclined back liner portion (11) providing an inclined back liner surface (12) and the complementary liner (20) comprises an inclined complementary liner surface (22). The inclined back liner surface (12) is opposite the inclined complementary liner surface (22). The liner arrangement (1) is configured to provide a channel (30) between the inclined back liner surface (12) and the inclined complementary liner surface (22). The disclosure further relates to a centrifugal pump (2) for processing slurries comprising the sealing arrangement.