Montgomery County Executive Sidney Kramer this week completed his staff with the appointment of two special assistants.

In a Tuesday news conference, Kramer announced that George H. Sealey Jr., a retired federal employe who once served as deputy assistant chief of protocol for the State Department, and Maxine H. Counihan, an assistant principal at Farquhar Middle School in Olney, will begin immediately as $62,500-a-year assistants.

The executive, under county law, can name three aides who do not require confirmation by the County Council. Sealey and Counihan join executive assistant Edmond F. Rovner, who had been an aide to executive Charles Gilchrist and was retained by Kramer.

Kramer, saying he has been consumed by the demands of his job since taking office 10 months ago, said that not having a full staff created huge demands on him but that he wanted to make sure he had the right people.

Sealey, 64, a senior vice president and part owner of Westco Automated Systems and Sales, will have major responsibilities in the areas of social services, senior citizens, handicapped persons and minorities. Sealey also was an education specialist with the Department of Health, Education and Welfare, an administrative officer in Nigeria with the U.S. Agency for International Development and was director of the Peace Corps in the western region of Nigeria.

Counihan, 49, who is married to Del. Gene W. Counihan, will serve as liaison with the County Board of Education, among other duties, Kramer said. There were celebrated battles between Kramer and his staff and the school board during last year's budget deliberations. School officials failed to get their full budget request and, by most accounts, Kramer emerged the winner.

Counihan, who will resign her school post, said she thinks it will be helpful to have someone who knows about the school systems serving as a conduit for the executive. Counihan, in answer to a question on whether she felt the schools got enough money last year, said it was a very difficult time and both sides did the best they could. Counihan began teaching in 1960 and spent time teaching emotionally disturbed students and in developing programs for handicapped children.

In a separate appointment, Ruby Rubens, a civil rights and fair-housing activist, has been named the county's Fair Housing Coordinator. Rubens will begin the $40,000-a-year job on Oct. 13.