Abstract: A replaceable seal assembly (10) for a used Canon brand developer station (100) having a peripheral recess (106) created by the removal of the original toner reservoir seal; wherein, the seal assembly (10) having a seal unit (11) including a generally rigid seal member (13) having a generally flexible seal member (14); and, a bracket unit (12) which is adapted to frictionally engage the generally rigid seal member (13) relative to the peripheral recess (106); whereby, the seal unit (11) may be inserted and removed from said peripheral recess (106) in the course of recharging the developer station (100) with fresh toner.