Saggar

A saggar (also misspelled as sagger or segger) is a type of kiln furniture. It is a ceramic boxlike container used in the firing of pottery to enclose or protect ware being fired inside a kiln. The name may be a contraction of the word safeguard.

Saggars are still used in the production of ceramics to shield ware from the direct contact of flames and from damage by kiln debris.

Traditionally, saggars were made primarily from fireclay. Saggars have been used to protect, or safeguard, ware from open flame, smoke, gases and kiln debris: Modern saggars are made of alumina ceramic, cordierite ceramic, mullite ceramic, silicon carbide and in special cases from zirconia.

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