The former prime minister of Zaire, Nguza Karl-I-Bond, called on the United States and other western countries yesterday to cease "blind and uncritical support" of President Mobutu Sese Seko in order to avert a revolution in the strategic African country.

Nguza, speaking at a news conference sponsored by Foreign Policy magazine, said Zaire is ripe for "military conflict or uprising" due to the corrupt, dictatorial and incompetent rule of Mobutu. Continued western support is creating "a golden bed" for revolution and radicalism, he charged.

A native of Zaire's Shaba province, Nguza served three times as the country's foreign minister under Mobutu and as prime minister for eight months prior to going into exile and resigning his post las April. Nguza was known as a moderate, pro-western figure in the top rank of Mobutu's entourage.

At the press conference Nugza quoted documents, which he said he had obtained as prime minister, citing details of millions of dollars and other foreign currencies obtained from Central Bank coffers by Mobutu and members of his family from 1977 to 1979. He also quoted a letter which he said was written by one of Mobutu's children excusing Mobutu's recent conduct on grounds that "he is old, sick and tired."

Nguza said he plans to present details of Mobutu's financial manipulation to the House Foreign Affairs subcommittee on Africa at a hearing this afternoon.

A nephew of the late Moise Tshombe, who was the leader of teh post-independence secessionist movement of Katanga (now Shaba province), Nguza presented his own interpretation ofthe 1977 and 1978 Katangese incursions of Shaba, starkly different from the official U.S. interpretations at the time.

the Carter administration charged that Cuba and indirectly the Soviets were behind the attacks by Katangese forces living in Angola. But Nguza said the Katangese exile group rejects communism and was reacting primarily to Mobutu-imposed isolation and to "misery and starvation" flowing from Mobutu's rule.