Condenser Tumble Dryer leaking

glitter123

My Creda tumble dryer is leaking a small amount of water from the back. Most of the water is going into the water container but a (relatively) tiny amount is leaking onto the floor. I called a repair man about a month ago who ckecked on the filters and said they were fine. He then said i'd need to empty the container before every use - if the water was going into but still leaking slightly it probably was an indication that the small black washer on the end of the water container was worn and so wasnt forming a proper seal with the valve.

Is it possible to just replace the washer or do I need a new water container?