Manufacturer Background

Occidental Chemical Corporation is the corporate successor to Hooker Chemical and Durez Plastics & Chemicals, Inc. — principal U.S. manufacturers of asbestos-filled phenolic molding compounds (including Durez Durite brand) during the asbestos era. Occidental Chemical Corporation is named as a defendant in publicly filed U.S. asbestos litigation including the Duke v. CBS Corporation et al. case (Cause No. 1822-CC00339, City of St. Louis MO). Per publicly filed allegations, Durez / Hooker / Occidental asbestos-filled phenolic compounds (including the Durez Durite product line, Durez 23693 phenolic-asbestos composition, and related Durez electrical-grade and thermoset-resin compounds) allegedly entered the U.S. transformer, switchgear, and electrical equipment supply chain at North Tonawanda NY, Kenton OH, and Niagara Falls NY plants. Workers at Durez plants and at downstream end-user facilities (including Square D, Westinghouse, GE, and the broader U.S. transformer and electrical-equipment manufacturing base) allegedly handled asbestos-filled Durez phenolic compounds throughout the 1940s-1978 asbestos era.

Documented Asbestos-Bearing Products

  • Durez Durite asbestos-filled phenolic molding compounds (see dedicated AP product page)
  • Durez 23693 phenolic-asbestos composition
  • Durez electrical-grade phenolic compounds (see dedicated AP product page)
  • Durez thermoset resins
  • Durez asbestos-filled phenolic compounds (allegedly through 1978 manufacturing cutoff)

How Workers Were Exposed

Per publicly filed allegations in U.S. asbestos litigation, workers were allegedly exposed to Occidental Chemical / Durez / Hooker asbestos-bearing components during:

  • Original manufacturing and assembly at Occidental Chemical / Durez / Hooker plants
  • Industrial installation of Occidental Chemical / Durez / Hooker components into transformer, pump, valve, electrical-distribution, and process-equipment assemblies
  • Field service, maintenance, and rebuild — including in-service component replacement and overhaul at utility substations, transformer service centers, refineries, power plants, paper mills, and broader industrial facilities
  • Dismantling and decommissioning — removing aged asbestos-bearing components from field equipment
  • Machining, drilling, sawing, and grinding — finishing operations on cured asbestos-bearing components

Workforce Trade Hub

Component Supplier Crosswalk

Workers exposed to Occidental Chemical / Durez / Hooker components at any U.S. transformer plant, service center, utility substation, industrial facility, pump or valve installation, or downstream end-user site may have legal rights if they have since been diagnosed with mesothelioma, asbestosis, lung cancer, or another asbestos-related disease.

Free, confidential case evaluation: Speak with O’Brien Law Firm — (314) 936-2956

All consultations are free. No fee unless a financial recovery is made on your behalf.


This information reflects exposure pathways and product documentation drawn from publicly filed asbestos litigation, federal regulatory records, and industry archives. It does not constitute a finding of fact or liability with respect to any specific manufacturer, supplier, or facility operator.