Wine and Beer Shank Snap ring
This is part number 5 in the picture below.
The beer shank snap ring works with the beer shank sleeve (number 4) to keep the beer shank coupling nut (number 3) on the shank. This allows the coupling nut to grip the threads of a faucet to tighten down. Be sure you are using a special faucet wrench, also called a spanner wrench, to tighten the coupling nut to the faucet.
Don’t hesitate to contact us if you have any questions.