Google is going to be your friend on that one. Rubatex is one brand I know of. You'll need to find someone with just a little. Try your local hvac companies. We buy sheets at a local vender here in the islands. https://www.rubatexusa.com/

 

Google is going to be your friend on that one. Rubatex is one brand I know of. You'll need to find someone with just a little. Try your local hvac companies. We buy sheets at a local vender here in the islands. RubatexUSA Home - rubatexusa.com

Thanks for the suggestion. I'll research local hvac sources after the holiday. Note: I've Googled till blue in the face. Non-upholstery thick sheets or pads are nearly impossible to find. Automotive applications are mostly thin gaskets.

 

Please explain your dimensions better? 5/8 thick, or wide? and it fits around a 3x4 square? Is it basically a gasket? Probably some hardware or parts store weatherstripping. Rubber or urethane. 3m will have something.

 

Do you happen to have a picture or the p/n.

 

Part numbers are: 4720033 and 4720034.

 

Amazon.com: Foam Sheets Self Adhesive Closed Cell Foam Neoprene Rubber Sheets Insulation Anti Vibration Foam Rubber Pads with Adhesive, Black (6" x 6" x 3/4", 4) : Industrial & Scientific

Buy Foam Sheets Self Adhesive Closed Cell Foam Neoprene Rubber Sheets Insulation Anti Vibration Foam Rubber Pads with Adhesive, Black (6" x 6" x 3/4", 4): Foam - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

 

Thanks. Yes I'd seen that and at first glance it looks perfect. The problem is the foam must be soft (easily compressed). The description says it's impact resistance and deformation resistance. I don't see any other specific description about compress-ability. The images where they show it used also require stiff foam.
The foam I need goes between the plastic (heater core/ A/C evaporator) housing and the firewall. Bolts that hold the housing in place also compress the foam into the large holes in the firewall. I'm concerned a stiff foam would likely cause the housing to crack when the bolts are tightened.
The original foam is easily compressed but in too many pieces to reuse.

 

Big 1/2 in thick sleeping pad. Make a hundred of them. Walmart, Harbor , Big Five. Lots of places. Add glue if needed.

 

Looked at those (have one). Anything I found are firm /medium at best. This needs to be "soft" as in no memory.

 

i just bought regular insulating foam from home depot and cut it to size, dont think we have to go crazy here

 

Then go to Home depot and get some light foam weather stripping.