So I thought I would come back and update this. I ordered the
PanPal 16" x 24" Quilon-Treated Parchment Paper Pan Liners Sheets - 50 / Pack These are not Silicone Treated. They are however thicker than the untreated parchment paper that I got from EZ but it does the same thing and sticks to the pretreated shirt. They do work better as they are thicker and seem to be better on the ringspun shirts than than normal cotton.
I did find the silicone treated sheets that I was looking for at ULINE. They were kind enough to send me a sample so I could compare them to the ones I had from EZ. They were a match.
Silicone Parchment Paper Sheets - 16 x 24" S-19146 - Uline
At $82 + $20 for shipping for 1000 sheets thats $0.10 a sheet. That's a huge savings from what I was going to pay.
Also I have found that the Silicon sheets do not leave a sheen on the shirt and do not stick to the shirt during pretreat drying. Harry at EZ brought this up in another post so he gets credit for that. The teflon cover on the heat press tends to leave a sheen along with the normal heat press mark.
So if your looking for these sheets ULINE seems to be the cheapest right now.
I do not work for ULINE just posting what I found to be a good deal. Sad that we even have to say that now days.