I have a problem with a leaking electronic housing. I have used teflon tape behind the orings to get a good seal. Without the teflon tape the o-ring is barely touching the tube (this was before sanding down the seal area). Have also sanded down the seal area according to this post: http://openrov.com/forum/topics/laser-imperfection-leading-to-water-leaking
I still have a leak, I have also tried to lubricate the oring with grease to try to get a better seal without any luck.
Any good suggestion how to fix the leak?