Siemens iQ300 Repair Hints page 118

Repair
1. Check groove for gasket for damage.
2.
If groove for gasket is it is damaged.
- Contact customer service.
3.
Slight deformation of door gasket is normal and does not affect its
function. It is recommended to straighten door gasket before insert-
ing it into appliance.
Heat door gasket with a hair dryer or hot water and manually reshape it.
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4. Push corners of gasket at the top and bottom to the groove.
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