Indian refiners have stopped dealing with U.S.-sanctioned oil tankers and entities but the country does not expect disruption to Russian crude supplies during a two-month wind-down period, a government source said on Monday.

Last week the U.S. Treasury imposed sanctions on Russian oil producers Gazprom Neft and Surgutneftegaz, as well as insurers Ingosstrakh and Alfastrakhovanie Group. The sanctions also targeted 183 vessels used to transport Russian oil, but the U.S. has allowed a wind-down of some energy-related transactions until March 12.

India is set to reject oil tankers sanctioned by the US for their role in moving cargoes for Russia, another example of impact that Washington’s measures are having on the global oil market.