Read the video transcript
Did you work with Harvey Black Knight Asbestos Pipe Joint Compound, Pipe Dope, Plumber Putty? According to publicly filed asbestos litigation records, it allegedly contained asbestos. Here is what it was, who was exposed, and who is responsible. Harvey Black Knight Asbestos Pipe Joint Compound, Pipe Dope, Plumber Putty, made by Wm Harvey Company, sold from around the 1950s until the 1980s. Wm. Harvey Company manufactured the Black Knight line of asbestos pipe joint compound, pipe dope, and plumber's putty. Plaintiffs allege Harvey products released chrysotile asbestos during plumbing assembly, sweat-solder prep, and pipe-joint maintenance work. According to publicly filed asbestos litigation records, this product allegedly contained the following: chrysotile asbestos fiber in pipe joint compound (pipe dope), thread sealant putty, asbestos-loaded plumber's putty. Workers allegedly exposed around this product included Plumbers, Pipefitters, Apartment maintenance workers, and Building maintenance. Asbestos claims are brought against the companies that made the products. If you worked with or around Harvey Black Knight Asbestos Pipe Joint Compound, Pipe Dope, Plumber Putty and were later diagnosed with mesothelioma, asbestosis, or another asbestos-related disease, you may have a legal claim against the manufacturer. This is educational information from an independent publisher — not a law firm — and is not legal advice.
Product Description
Wm. Harvey Company (and the Black Knight brand of plumbing-trade chemicals) manufactured through the asbestos era a major U.S. line of asbestos-loaded pipe joint compound (pipe dope), asbestos-loaded plumber’s putty, and related plumbing-trade thread sealants and gasket-grade pipe fitting compounds. Harvey’s products were standard inventory at plumbing wholesalers and hardware stores nationally and were specified by plumbers for sealing threaded steel pipe joints, brass fittings, and drain assemblies through the documented asbestos era.
Plaintiffs alleged in publicly filed U.S. asbestos personal-injury and wrongful-death litigation that Harvey’s Black Knight pipe joint compound, plumber’s putty, and related thread sealants contained chrysotile asbestos throughout the documented production era. Plumbers and apartment-maintenance workers who hand-applied pipe dope to threaded joints, who scraped dried joint compound during repair work, and who reworked sweat-soldered copper joints in proximity to applied compounds disturbed asbestos fibers as a routine part of the plumbing trade.
Wm. Harvey Company has been named as a Manufacturer Defendant in publicly filed U.S. asbestos personal-injury and wrongful-death litigation.
Exposure Pathway
- Hand application of pipe dope to threaded pipe ends — direct skin and respiratory contact with fibered compound
- Scraping dried joint compound during pipe-rework and leak-repair tasks
- Sweat-solder copper fitting prep in proximity to applied pipe-dope joints — heating released VOCs and disturbed fibers
- Plumber’s putty application at drain assemblies and fixture seats
Workers Exposed
- Plumbers (UA Local members)
- Pipefitters
- Apartment and building maintenance workers performing in-place plumbing repair
- Sprinkler fitters and HVAC piping technicians
- Refinery and industrial pipefitters working threaded process piping
Free Case Review — Attorney Advertising
If You Worked at Wm. Harvey Company / Black Knight
If you or a family member worked at Wm. Harvey Company / Black Knight and were exposed to asbestos-containing materials at this facility — and were diagnosed with mesothelioma, asbestosis, lung cancer, or another asbestos-related disease — you may have a legal claim. Time-sensitive filing deadlines apply.
- ✓ Free case evaluation — no obligation
- ✓ No attorney fee unless the case resolves in your favor
- ✓ Trust fund claims and civil lawsuits pursued simultaneously
O'Brien Law Firm — Attorney Advertising. Visiting this page does not create an attorney-client relationship. No fee unless a financial recovery is made.