QHY10 sealing ccd

[ebdons]

Hi, what is the sealing stuff or compound that seals the front cap with the window, as I've had to take the cap off to clean the brown sealing stuff away from the ccd sensor that was getting stuck on the foam insert and contaminating my sensor. I've taken the foam bit out for now as it's contaminated with this brown stuff and what is the best sealer to use, not asking QHY directly as I think this forum will have a better option. This is the later type with desicant tube and thicker 3mm window. thanks for any info Tony