The wife of a Manhattan strangler is standing by her man — although he viciously threatened her via a Rikers Island pay phone.

“I am going to rip your f–king face off!” Joseph Pabon screamed at wife Lisa Marie from jail, prosecutors revealed yesterday as he was sentenced to 25 years to life for strangling an office cleaning woman at 2 Rector St. two years ago.

The body of mom-of-three Eridania Rodriguez was found days later in an air shaft in the building. Pabon, an elevator operator there, was implicated by surveillance video, photos of his scratched body, and his own skin cells recovered from the victim’s fingernails.

Pabon’s wife berated juror Stephanie Farias at the sentencing, asking, “Why did you find my husband guilty?” and insisted to a reporter, “I know he didn’t do it.”

“Love is strange,” Farias, 39, noted as the wife stalked away.