E Glass Fibre Kiln Packing: our E Glass fibre kiln packing is produced using 6-9 μ glass yarns and has an outside sleeving made of stainless steel yarn. The sleeve prevents the packing from fraying and allows it to remain intact longer in the seating on the brick factory kiln. This packing features exceptional resistance and can easily be fitted into place on the kiln. The E Glass fibre is rated to 550°C with the Stainless Steel layer rated to 650°C.