While most of our washers are designed to a standard, we do have a supply of non-standard washers available. They were designed to be as strong as normal, but lighter. This means they are usually thinnner and are manufactured with different infills or air pockets to maintain themobarics equivalence to normal washers, given the different recyclable material we use. In short, yes, but they are not any different in performance to the orginals, just stronger and last longer.