Orton SRB Small Cones

Orton SRB Small Cones are commonly used in Kiln-Sitter equipped electric kilns. The tapered shape allows some flexibility to adjust shut-off vs Orton BRB Pyrobars.

Small Cones can also be used on the kiln shelf as miniature witness cones when space is limited. Orton SRB Small Cones require mounting in cone holders or plaques at an 8° angle and a width of 15/16 of the cone exposed above the cone holder. Small Cones used on the kiln shelf deform at about 9°F after Large or Self-Supporting Cones of the same number.

In 2016, Orton began packaging Small cones in pairs like Large and Self-Supporting cones.  They made the change to reduce the number of cones broken during shipping.