I've had the same problem with my Bosch sander, which has otherwise been a great tool I've had for many years.
The rubber gasket actually doesn't hold the dust cannister on. There are a number of little nibs on the stem of the dust port that fit into a groove in the cannister. About half of the nibs had worn off on my sander. I used some epoxy to beef up the worn out nibs, and now it's good as new, nice solid connection!
Bosch ROS20VSC 5" Random Orbit Palm Sander Dust Container Loose
in Bosch
Posted
I've had the same problem with my Bosch sander, which has otherwise been a great tool I've had for many years.
The rubber gasket actually doesn't hold the dust cannister on. There are a number of little nibs on the stem of the dust port that fit into a groove in the cannister. About half of the nibs had worn off on my sander. I used some epoxy to beef up the worn out nibs, and now it's good as new, nice solid connection!