Nitrox Scuba Diver O-Ring Kit 166pc

The kit comes in a small and lightweight box. The dividers are flush with the lid, and the rings are not getting mixed up (the seller must have changed the box, since another review reported this problem). The dividers are removable, and one has to be careful not to pull them out together with an O-ring.The kit covers all common sizes including Yoke and Din tank valves.All O-rings have a 90 Durometer hardness. This hardness is normally only found at high pressure ports, while the softer and more flexible 75 Durometer are used at low pressure ports. While it is rather unlikely, the 90 Durometer might be a bit harder to install and not seal as well at low pressure connections where little force is applied. But future will tell whether or not this is the case.

There is a great assortment of rings and they are as described. The case is OK and does keep everything divided up. I may put some 0-Rings in a smaller case for my save-a-dive kit along with some silacone. I would buy this again as it was a great price.

I bought it for safety reasons, since I travel far to dive e may not have a shop near by to fix my gear. Did not need it yet.

Great assortment of o-rings for a diver, and Viton means you won't be limited from Nitrox. They are more of a dark gray and perceptively stiffer than Buna, so you're not likely to confuse them (a very good thing!). Literally saved a dive for another diver in the group the day after I got them.

O-ring kit seems nice, only problem I have with it is it’s advertised as having 12 different sizes and mine only has 11. It’s got the spot for 12 however there are no 1/2” o-rings in the kit at all. Not sure what that’s about

Comes in handy - never know what random o-ring you are going to need. Probably have a near life time supply of them with this kit.

Saved by bacon already - lost an o ring on the gauge hose and this kit had one to fit.

The o-rings are fine. The plastic case is junk. It's suppose to have compartments but the walls are not fixed inside. The end result is a plastic box of scrambled o-rings. You'll have dig and match your desired size as there are not sorted when delivered.