Was 4520 — asbestos documented in litigation?

4520 — is documented in public asbestos litigation records as a manufacturer whose products contained asbestos during the mid-twentieth century. Workers in industrial facilities, power plants, refineries, shipyards, and commercial construction who handled or worked near these products may have experienced occupational exposure.

Which trades had the most exposure?

Pipe coverers and insulators, pipefitters, boilermakers, millwrights, and maintenance workers are among the trades most frequently documented in asbestos exposure claims. Workers who cut, fitted, or removed asbestos-containing products — and those working in close proximity during that work — typically had the highest fiber concentrations.

How long do workers have to file an asbestos claim?

Statutes of limitations for asbestos personal injury claims vary by state, typically ranging from one to five years from the date of an asbestos-related diagnosis. The clock generally starts at diagnosis, not exposure — mesothelioma can have a latency period of 20 to 50 years. An asbestos attorney can identify the deadlines that apply to your specific situation.

Can workers file claims related to 4520 — asbestos exposure?

Yes. Workers diagnosed with mesothelioma, asbestos-related lung cancer, or asbestosis after exposure to 4520 — products may pursue claims through civil litigation. An experienced asbestos attorney can assess available defendants, applicable trust funds from co-defendants, and the states where claims can be filed most effectively.

Can family members file secondary exposure claims?

Spouses, children, and household members who developed asbestos-related disease through contact with contaminated work clothing brought home by an exposed worker may be eligible for secondary (household) exposure claims. Wrongful-death claims can also be filed by surviving family members of workers who died from asbestos-related disease.

4520 — Asbestos Products & Litigation History

Documented Asbestos Litigation

According to publicly filed asbestos litigation records (reviewed via CourtListener/RECAP), 4520 has been named as a defendant in 100+ documented asbestos dockets filed between 2006 and 2025 across U.S. district courts. Plaintiffs allege that 4520 manufactured or supplied asbestos-containing products — Renamed corporate shell (4520 Corp., Inc.) that litigates as a genuine asbestos-products defendant across SC/NC/WV asbestos dockets alongside gasket/packing/pump/boiler makers; specific predecessor product line not pinned down — and that workers were exposed while handling or working around them.

Companies Frequently Named Alongside 4520

In these publicly filed cases, 4520 is most often named as a co-defendant alongside Flowserve US, Armstrong International, FMC, Foster Wheeler Energy, General Electric, Grinnell, Viacomcbs, Fluor Enterprises — reflecting the multi-defendant nature of asbestos litigation, in which plaintiffs name the range of companies connected to their exposure history.

Occupational Exposure and Asbestos Disease

Asbestos exposure is associated with mesothelioma, asbestosis, and asbestos-related lung cancer, typically after a latency period of two to five decades. Workers in industrial trades — maintenance, construction, shipyard, power generation, and manufacturing — are among those most frequently represented in asbestos litigation.

Legal Status and Litigation History

The litigation record above reflects allegations from publicly filed asbestos cases; these are plaintiff allegations, not findings of fact, and liability is determined case by case. An attorney experienced in asbestos litigation can evaluate whether a specific work and exposure history supports a claim involving 4520.

Were You Exposed to an Asbestos-Containing Product?

If you have been diagnosed with an asbestos-related disease and were exposed to asbestos-containing products, you and your family may have a legal claim. An attorney experienced in product liability and asbestos claims can evaluate your case — at no cost to you.

Living with a diagnosis?

If you were diagnosed with an asbestos-related disease, a filing deadline may already be running. You may have a legal claim now — and claims can often be pursued even if the company is out of business.

Lost a loved one to mesothelioma?

Surviving spouses and children may pursue a wrongful-death claim and asbestos-trust recovery on a loved one's behalf — a separate deadline that can run from the date of passing.

Free case evaluation — no obligation to hire

No attorney fee unless we make a financial recovery

Personal-injury and wrongful-death claims both evaluated

Statutes of limitations may limit the time you have to act

Trust fund claims, civil lawsuits, and VA benefits pursued simultaneously

Call: (314) 207-2823 Free consultation — available now

O’Brien Law Firm

Asbestos Product Liability & Mesothelioma Claims