I probably replaced a dozen or so of these in my career, they did not normally ever fail, but sometimes people damage them were managed to cut them or something., Maybe the dog chewed on it, etc.
Unless it’s in bad condition, it’s unlikely that it’s ever gonna fail if you’re reasonably careful with things, they never really caused a leak or anything, but people replaced them for cosmetic reasons mainly.
The same door seal was used on the 15th through 17 machines, I think we currently have four machines that use this seal three of the museum and one in my second home.
John L