Useful topic breakdown on Cock rings:

Cock rings - Why Around the Balls?
Halloween is coming up and it's time for picking out the presents. Let me be the first to share my plans I've decided that this year I will...

Kissing During Orgasm
This question is mostly directed towards females. So, when having an orgasm, do you like to kiss your partner while having the orgasm, or is it...

Cock Rings n' Things
What are some of the more non-conventional penis rings you might have used? Ever tried rubber bands? Whats the tightest and/or weirdest places you've

What can you use a vibrating ring for?
Does anybody have any alternative uses for the vibrating ring?

Sharing a Book
Is there a book that you wish you could convince your boy/girlfriend to read? Have you both challenged the other to read the same book?

As long as there are no medical conditions, other than the ED, they are pretty safe. Like most things, listen to your body and stop and release the pressure if pain is felt. Above all else, do not over do it. Only pump enough to get the erection, two or three pumps, once you have a good seal, would be a good place to start. Usually problems come from over pumping as this can cause ruptured blood vessels.

As far as you doing it to him, as long as there is an open line of communication between you both you should be fine.