I have never had to replace it and don’t see it specifically listed on the web site. I suggest giving them a call and letting them know what you need. The sales reps are always able to help and always have a solution anytime I give them a call.

It is recommended to swap out the silicone seal for a #3 stopper to create a better seal.

If your using a traditional kegerator you are going to need to be able to turn the spout to the side or have extra liquid tubing because it won’t all fit. Also obviously need long enough gas line. If your using a keezer you just need long enough gas line to reach the filler.

The Co2 gas telescoping tube works for different size bottles pull it all the way out to reach the bottom of the size bottle you're using. Connect to your Co2 source and press the button on top to flush oxygen out of the bottle then start filling with beer. It takes some practice to balance pressure and flow. I put my bottles in a small pitcher to contain a possible spillover and making cleaning up easier.

Assuming you already have the bottles you just need a second C02 connection for purging. I do believe this is only compatible with a NukaTap as well ( mine didn't fit my perlick).

I have never filled a growler but tried to see if the seal would cover the opening. With a little wiggle you can get the outer lip over the rim so it might work. Though Nukatap does sell the growler filler tap connector.

It does not fit on a 64oz screw-top growler. The seal lip contacts the edge of the top of the finish (where the lid seals). The seal is designed to fit tightly on a standard 26mm finish on a beer bottle. I recommend filling a growler by first using the purge feature by extending the tube into the bottle and purging with CO2. Then my preference is to use a fairly large silicone hose (3/8" - 1/2" I.D.) slipped over the beer tap ( I use Nukataps) and pushed fully into the growler and fill directly from the beer tap then cap on foam.

No it's not. When I fill a growler I use a "Growler Filling Spout | Intertap | NukaTap D1214" with a section of tubing long enough to reach the bottom of the growler and fill from the bottom and cap on foam to minimize oxygen. Usually overflow some so plan to have something to catch it to minimize the mess.

It is not designed for a growler but if you work at it it can stretch to fit. It does fit and work great on common size bottles.

I haven’t tried it but it seems possible. The silicone cup is able to go over the top of a 64 oz growler and hold pressure.