On Monday, Lock Insulators Inc. announced that it would close its manufacturing plant in Port Covington. The 180 employees operating the plant will be laid off, as well.
The manufacturing plant at 2525 Insulator Drive makes electric utility insulators, which are dwindling in demand. Operations will wind down over the next few months.
The porcelain station post insulators made at the Port Covington plant are utilized to control electric current that flows through electrical wires. In recent years, the demand for these products has declined due to electric utilities using imported insulators that are less expensive.
Eighty-four of the people working at the plant are members of the United Electrical, Radio and Machine Workers of America.
In the fall of 2016, the union finalized a three-year contract with Locke Insulators that runs through September 2019.
According to the company’s website, it relocated its headquarters to Baltimore in 1922.