Mutt, you can use either sealed or not and it will work fine as far as giving you enough clearance to seat the drip shield below the atty. Even using an open-post connector, you will still have much less leakage than using no drip shield (I often do, since I don't keep them separated in storage I'll just use whatever I grab out of my adapter stash), but using a sealed connector makes it practically impossible to leak (unless you have a damaged o-ring)
Some devices won't require an extender, like Drew mentions. Look at an eGo connector, for example (or the Indulgence, now that I looked at the pic of it on the Nhaler site). The 510 connection is raised in such a way that you can just slide the shield down over that, instead. Can be a little messier when removing it, though
Drewsworld said:
That really was a great explanation!!!
Thanks
If you do use it for the site, you'll probably want to re-write it a little. I tend to ramble sometimes and can be hard to follow, though I've gotten better at that ;-)