To date, we have not heard of any customer who has had an issue with their pendant after it is permanently sealed. One recent customer said in a recent review, "I took some time to write this review from when I purchased it over a year ago to help with providing details on its durability. I must say, this is the absolute perfect way to cherish your loved one. It is absolutely stunning and I have received countless compliments." That said, we do not recommend submersing pendants in water after they are filled, this may weaken the bond.