M Series Port Lens O-ring
The M Series Port Lens O-ring is specially designed to fit on our flat M ports series.
This o-ring is made out of NBR. It will perfectly secure the seal between the flat M ports series and the front acrylic lens.
This o-ring is crafted to the precision tolerance required to hold a adequate seal between Liquid Eye flat M ports and the front lens element. NBR o-rings are easy to maintain.
It is important to keep them free of sand or dirt. As you do not have to open the front glass element (unless you have to change the glass element), you do not need to grease this particular O-ring. But if you ever want or have to open it and give it a go, slightly grease them. For salted waters it is highly suggested to use marine grease. Just put some marine grease on your fingers and slide the o-ring between your fingers to apply a thin coat of lubricant on the rubber. It is not recommended to over lubricate the o-ring. It may end up by sticking sand and other debris. A shinny look is fine.
Please kindly note that using another type of O-ring to seal your M port glass element may cause severe leak and void the warranty.
The M Series Port Lens O-ring fits on all our flat M ports and on the following 12 cm M series dome ports :