One can actually over due o-ring maintenance. If it isn't broke, don't fix it. Everytime the main o-rings are removed there is a chance (ok - maybe small) that something may be overlooked during the reinstallation. If the visible sealling surface is clean, the o-ring doesn't have to be removed all that often. I'm using my Gates video housing as a basis because I just got my PT-015. Used the last Gates over 6 yrs without a single problem. It also uses a silicon main o-ring face seal. Cleaned as required each time the housing was opened. Only removed if really necessary to clean. Scheduled removal & reinstall after a trip. It could have had 30-40 dives on it at that point. I know Oly gives you "special grease" for the red o-rings. All they really need is a little moisture (read spit). Too much grease of any type will ruin them. The last 25 yrs of my job had to do with u/w housings & o-rings. Super few problems using this approach.
P.S. They may actually stretch more if you grease them - they become more pliable & stretch easier.
P.S. They may actually stretch more if you grease them - they become more pliable & stretch easier.
