The seal of Sikkim, also called Kham-sum-ongdu, is used by the government of Sikkim as its symbol. It was previously the symbol during the latter period of the Sikkimese monarchy.
The central shield, supported by dragons, consists of a Buddhist khorlo prayer wheel with the gankyil as the central element. Above is a helmet more in line with European armorial bearings, and atop that is the right-turning conch, a Buddhist pictogram representing the pervasive sound of the Buddhadharma which awakens disciples and urges them to accomplish their own welfare and the welfare of others.
The seal comprises the Tibetan words Kham-sum-ongdu, which literally means "the conqueror of the three worlds".
With the annexation of Sikkim to India, and with the abolition of the monarchy, the flag of Sikkim lost its official status, but the symbol was retained.