The Hex Wing Nut Washer will help you repair your keg coupler. Repair your Keg Coupler with a Hex Wing Nut Washer.
Neoprene Coupling Washer
U.S. Beer Industry standard washer
Use with hex nut and wing nut fittings to create a leak free connection
For use with Hex Nut or Wing Nut Fittings