seal (someone or something) off from (someone or something)

seal (someone or something) off from (someone or something)

1. To bar someone or something from entry into some place. The first noun or pronoun can also come after "off." Police sealed the building off from the public while the investigation took place. We need to find a way to seal off the store room from these rodents.
2. To completely isolate someone or something from someone or something else; to make someone or something totally inaccessible to someone or something else. The first noun or pronoun can also come after "off." The prison warden sealed off the inmate from the rest of the prisoners. The museum sealed the artifact off from visitors after the attempted theft.
See also: off, seal
Farlex Dictionary of Idioms.

seal something off from someone or something

 and seal something off
to make something inaccessible to someone or something. The police sealed the building off from everyone. They sealed off the building from all the reporters.
See also: off, seal
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • check off
  • base off (of) (something else)
  • bite off
  • blow off
  • blow someone/something off
  • blow off the map
  • cheese off
  • cheese someone off