I bought the original BlueROV which came with an 4" and 3" enclosure (i think). I bought it when it was released (or around there) and never changed my O-rings… I really think a maintaince is due, but they seem to have been replaced and swapped with new ones.
So what would I be searching for to find replacement o-rings for my flanges?
Both the flat-groove oring and the two thicker ones inside?
Hi @thorleif,
There’s an O-Rings and Seals section in our Technical Reference, which is the first place I’d look - the ones you’re after have “non-locking” specified in the “Products” column 
From a different direction, we sell spares for some of our old / retired products in The Abyss - as it turns out the spare o-ring sets are indeed available, and quite close to the top
Thhank you! I somehow searched it up and found them out of stock on a different sku or something via google. Not sure what happend. Also thanks for the information about technical reference. A golden page!
All solved, love your products. Keep exploring