PERMA-SEAL / O-RING SEAL (ABC )(CO2 Regulator to Cylinder)
PERMA-SEAL / O-RING SEAL (ABC )(CO2 Regulator to Cylinder)
PERMA-SEAL / O-RING SEAL (ABC )(CO2 Regulator to Cylinder)
PERMA-SEAL / O-RING SEAL (ABC )(CO2 Regulator to Cylinder)

PERMA-SEAL / O-RING SEAL (ABC )(CO2 Regulator to Cylinder)

HGHG-PERM-50

Login to view price.

PERMA-SEAL / O-RING SEAL (ABC)(CO2 Regulator to Cylinder) 

Perma-Seal (CO2 cylinder to regulator seal)
 
This is the only way to go...no more leaks...no more cracked plastic washers.
 
If your regulator or your cylinder valve is "threaded" this will work for your application.