I have a friend who makes things in silicone, and I have one intact gasket. I am toying with the idea of asking her to make some. I can let you know how that pans out.
On a side note, who approves posts for the group? I have one that has been hanging around for a long time, and it still hasn't appeared. I know there's low activity, but I see other posts since then. so was wondering if I need to email someone to get permissioned in. It's so nice that there's no junk in this group.
If anyone else is interested in the gasket thing, drop a post here. She does great work, and actually can make a large gasket from this small one that I have by extending the mold, or by 3-d modeling a master for it. The new technology is super great for this kind of thing!