Tossed Salad:
I’m also in Australia and I too purchased a cheap nasty cylinder from an aussie ‘sex store’ once, it was a terrible idea, I got the wrong size and it sucked my balls in, the fittings were cheap and no gauge, awful idea.
I ended up buying this:
http://www.vacu tech.com/prodde … A100030SIZELUBE
It’s not cheap but at 3 years old it still works fine and it’s high quality stuff.
A guage is very important and a thick, quality wall is VERY important.
If you repair the one you have and the pressure gets too much it could implode in to your dick (no, I’m not kidding) I’ve heard rumours here several times but never seen a pic of the results.
It’s not cheap but it’s quality and it lasts.