Developer replenishment container with annular seal member

A developer replenishment container configured to be detachably attachable to a developer replenishment device and replenish a developer through a replenishment port, the developer replenishment container comprising:

• a developer replenishment portion configured to have the replenishment port and be restricted not to rotate by being attached to the developer replenishment device;
• a developer accommodation portion configured to be provided to be relatively rotatable with respect to the developer replenishment portion and accommodate a developer;
• and
• an annular seal member configured to be provided at a connection portion between the developer replenishment portion and the developer accommodation portion and seal a gap between the developer replenishment portion and the developer accommodation portion, wherein
• the developer accommodation portion has
• an annular abutment portion provided at an end portion on a developer replenishment portion side in a direction of an axis which is a rotation center of the developer accommodation portion and provided to be in contact with the seal member in the direction of the axis;
• and
• a projecting portion provided near the abutment portion and provided to project toward the developer replenishment portion further than the abutment portion in the direction of the axis,
• wherein the projecting portion is provided to be divided into a plurality of portions along a circumferential direction of the abutment portion.