Its been many moons since Ive ordered anythin on Wablink for a museum. I noticed Wablink is no longer on the website, or if it moved i havent seen it. Anyone know how to order anything online, or it that no longer an option? also the parts catalog has also gone away with wablinks disapearance.

From a quick search -

"Sorry - the Wablink website is out of commission. For price & catalog inquiries call toll free 1-877-922-2627 or email us at wgsinfo@wabtech.com ".

How do you know what is in the catalog without a catalog?

Have you tried archive.org to see if they have a copy of the old catalog archived?

How do I know whats in the catalog?

There was a search feature. If the part was still active, as in the case with S16 governor gaskets, and some gaskets for u4 traction valves, they would come up.

And they did have listings of active part numbers.

B3A conductor valves, since still made, can get internal parts, and part numbers for gaskets and some things havent changed in 100 years.