The kiln firing gaskets are made of Alumina (aluminium oxide) which are durable and heat-resistant (withstand 1400 degrees high temperature).  They are crucial accessories for kilns to enhance the firing process in ceramic and pottery production.
 
They are designed to prevent the work from sticking to the shelf, 10mm thickness provide a stable and reliable buffer beween the artwork and the kiln shelf. They can be used over and over, maximising the logevitiy of kiln shelf life.
 
They come in 5 handy sizes for different artwork.