What does the washing machine door seal do? The washing machine door seal, otherwise known as a gasket, is a very important part of the appliance on a front loader machine. It securely seals the door in place when shut to prevent any water getting out. During a cycle, most washing machine doors automatically lock which is when the door seal does its job best. Is the washing machine door seal causing the problem? The faults listed below indicate an issue with the door seal. You may need to replace the seal if: o Your appliance is leaking from the front of the door o The door seal is torn, warped or damaged o Mould has built up at the bottom of the seal and it’s beyond cleaning Bear in mind that the door seal may not be the only fault that can cause a leak in your washing machine. Please check model fit list to ensure this part is correct for your model.