Actually i just remembered the toyota aurion filter did come will the o ring seals in the box,there was only one stuck i couldn't remove so i just left it didn't want to brake the housing,from memory it was my camry sportivo the filter didn't come with any o ring seals so i re-used everything
its true its just luck i guess if noting happens, you make a good point its a good idea to replace them while your at it since everything is open