Marks Caused By A Washing Machine Door Gasket
Grey coloured marks with rubbery feel.
The garment is often torn and this is usually caused by the garment being forced into any gap between the washing machine door seal or gasket often called a porthole bellows as well and the drum of the washing machine.
This is a "fault" we hear of quite often and again it comes down to, essentially, customer misuse or misunderstanding of the appliance as explained here.
The grey marks may be reduced by pre-treatment with Ariel Liquid, then a normal wash following the fabric care label. If the fibres have been damaged there is no treatment.
Cause & Prevention
The machine has been overloaded, resulting in the garment being "pushed" against the rubber gasket and becoming trapped between that and the drum of the machine during spinning.
Do not overload the machine.