I know it’s daft. But, rubber O rings work out best for me and my metal allergy.
Yes, I could experiment with less common metals like titanium and such. But, I can buy 300 O-rings for the cheapest titanium ring I’ve seen. And, each O-ring lasts me about a year. So, I’m not inclined to experiment...

no subject
Date: 2010-01-07 02:53 am (UTC)no subject
Date: 2010-01-07 02:57 am (UTC)no subject
Date: 2010-01-07 03:00 am (UTC)no subject
Date: 2010-01-07 11:34 pm (UTC)(Also, so is platinum, and J's encouraging me to add that, but damn! is it expensive!!!)
no subject
Date: 2010-01-08 02:31 am (UTC)