Anyone whose criminal history record cannot be sealed can still get help by obtaining a Certificate of Relief from Disabilities or a Certificate of Good Conduct. These certificates are valuable option for lifting certain employment and licensing restrictions.
A sealed record can still be seen by law enforcement, by a firearm licensing agencies, by a prospective employer on a job requiring the carrying of a gun (i.e., a police officer), child care agencies, hospitals, schools and companies hiring school bus drivers.
Out-of-state and federal arrests and/or convictions are not a part of your New York criminal record and therefore getting your New York record sealed has no effect on them.
Since a sealed record is not generally open to the public it does not have to be disclosed on employment applications. Additionally, you will become eligible for things such as student loans, certain housing assistance, and the right to vote.
For more information, click to read the following articles:
Sealing of Adult Criminal Records in New York
Process to Sealing Criminal Records in New York
Sealing of Juvenile Records in New York
Do I Need An Attorney To Seal My Criminal Record in New York?