Silicone Rubber Sheet,Heat Resistant, Heavy Duty,High Grade 60A,12 x 12 Inch, 1/25 Inch Thickness for DIY Gaskets, Pads, Seals, Crafts, Flooring,Cushioning of Anti-Vibration, Anti-Slip

I was using this to line a mold to melt plastic into different shapes. Its kind of pricy (since I had to cut it up) But it worked good in the oven at 350F

Worked great for my project. As others have mentioned it’s not square.

The rubber itself seems fine, but my piece was not 12 x 12, which is what I needed for my project. And, it was not square -- mine measured 11 3/4 x 11 7/8, with one edge not very straight. For this price, the tolerances should be better.

Product as described

Worked for what I needed. There was a hole in our RV floor where some tubes run to the outside. I used this to make a mat basically that covered the hole but let the tube through. Then glued it all down. (If the glue sticks to the silicone is another matter) but it will keep pest out so does the job.

This item arrived and its at best 1/16 thick .......... cant use it for my intended purpose. Disappointed ... now

This is perfect for what I needed - a (relatively) thin rubber sheet I could cut to size and use as gasket behind a doorbell intercom mounted on stucco. I searched high and low in a big box hardware store one night but came up empty handed. I found this at Amazon and couldn’t be happier.

Worked great for my application. Used between a anchor plate and my kayak.

Easily cut with gasket cutter. Seems to work fine and should be able to withstand weathering. Sheet will provide materials for many more gaskets.

Worked as need to cut custom rubber feet shapes.