use the seal that is already on the kettle. it should be a little flanged rubber thing that just sits over the hole if you've cut it the right size.I just reinstalled the element in the bucket exactly as it had been in the kettle and it never leaked. For the tap, use an o-ring on the inside, and make a rubber washer from a cheap silicon baking sheet (you can get them in TK maxx or some such place, dunnes maybe) and they're very useful, being food grade silicon. you can cut washers and what not from them.