Rangemaster Toledo 110 oven door seals broken... BOTH !?

Hi
I have a question regarding the integrated Rangemaster Oven Toledo 110 (that fit perfectly with the Toledo FS hob)
I bought this really good piece of appliance last year and 2 weeks ago, both door seals broke !! Is it something common with the Rangemaster serie ?
I keep using it but it's getting annoying and I am going to buy the seal and change it...