no problem mantis, that's exactly what I wanted...that's why I put it in big purple letters!
I agree with all your points, thought the same thing. These are all dense rubber, not porous and spongy (and I did see that type also) but I tweaked the contrast on the pics to be able to see detail on black on black, it made it look that way, especially pics 6 & 7.
I tried:
ACME rubber
Complete Automobilist
Griffith Rubber
Technorubber Industries - Samples 1 & 2
Rocket Seals -
Steele Rubber products - Sample #3 (it's a classic car parts restoration operation)
Robinson Rubber
Manufacturer's Rubber
Yakima- none similar and none remaining
I sent detailed pics and called them, and I know there were a few more companies I'm forgetting. I was REALLY surprised I couldn't find anything similar. One company said sometimes automotive companies patent these kinds of things and maybe that's why I couldn't find anything like them. But I know Yakima made these racks, so maybe they have a paten, who knows.
They're mostly automotive, and some are window weatherstripping.
Any ideas or further sources for something that will work better would be great! Thanks!