Possible ways to increase IP Rating

Hello. I have a UR5e which has been working pretty flawlessly through ROS .Going through the technical specifications document,I saw that the arm is IP 54 rated.I was wondering how I can increase the IP rating of the arm to IP 65 since my application requires the arm to be completely protected from dust and water.Are there any solutions that are available? I was wondering if replacing the plastic covers covering each robot arm joint with more protection(adhesive solutions/silicone wraps) might help ?