If you don't want to hot glue jb weld or use silly putty you can try this stuff called Max Pillow Soft Silicon Ear Putty.It's a silocone putty that will never dry out (i've had some on top of my tool box for two years and it's still like brand new)It also will not change viscosity with a cgange in temp cause it is 100% pure silicone putty.You will find all kind's of uses for it once you get some and start thinking what else can i use this for?It tollerates high heat well it will not melt.It works good to fill the area where your wires come out of the esc so water wont get in there.You can get it at rite aid and other drug store's and grocery stores