Oval keg lid fits postmix/Cornelius  19L and 9.5 litre kegs.

comes with pressure relief valve and yellow Low.2 sealing oval O ring 

What is Low2?
Low2 O-Rings are the new golden yellow standard of homebrew kegs Why? Because of their unique composition (Synthetic M-Class and Cross-Linked Elastomers), they have superior oxygen barrier properties than that of the previous O-Rings (Silicone). This results in your beverage staying fresher for longer.