Pura O Rings
Getting the right o ring for a Pura UV unit isn’t always simple. The chart below is designed to help.
All o rings listed can be found here.
| Pura Unit Description | Built Prior to Fall 2009 | Built after Fall 2009 |
| UV1 | OR018 | OR015 |
| UVB | OR019 | OR016 |
| UV20 | OR019 | OR016 |
| UVBB (See Note Below.) | OR020 (See note below.) | OR026 (See note below.) |
There is one exception. There is an intermediate BB unit built between Fall 2009 and Jan. 2012. It uses a unique o ring: OR017.
