Usage for hash tag: 229Buna

...it, if I thought I needed more skim. Figured out it was better to add One Gallon of Saltwater, and One Quart of RO/DI to bring the sump level up and not touch the valve. Recently I had to replace the “O” Ring, got a package of Ten and #229Buna-N 50A Durometer. 2-3/8” ID, 2-5/8” OD, 1/8” Width.