5/16″ Blue / Black Hi-Temp Ceramic Crayon – 2750°F

Temperature Limit: 2750°F

Easier to use than chrome paint

Ceramic Marking Crayons are made for the labeling or identification of ceramic goods in both industrial and laboratory uses. These crayons maintain their clarity up to 2750°F.

Ceramic crayons are used for labeling refractory in the field (bricks, boilers, castables, IFB) and laboratory testing. They are much easier and convenient to use than chrome paint.