Detailed Product Description Refractories for Glass Kiln This series products include low porosity firecaly brick, brick with low iron content, low porosity and low creep rate, mullite bricks, Sillimanite brick, re-sintered AZS, zirconirm Ramming Mixes, etc. ItemLow porosity fireclay brickBricks (low iron, low porosity and low creep rate)Mullite bricksSillimanite brickRe-sintered AZSM-70M-80AL2 ...