W-6 by Federal-Mogul/Ferodo
Product Description
The W-6 was an asbestos-containing product manufactured by Federal-Mogul/Ferodo, a company with deep roots in both the brake friction and pipe insulation industries. Federal-Mogul Corporation was one of the largest automotive parts and industrial supply manufacturers in the United States, operating under multiple brand names and acquiring numerous subsidiary companies throughout the twentieth century. Ferodo, a British-origin friction materials brand, became part of the Federal-Mogul family and contributed specialized expertise in brake and clutch friction technology to the broader product line.
The W-6 designation appears across Federal-Mogul/Ferodo’s documented product catalog in connection with both brake friction applications and pipe insulation uses, reflecting the company’s wide industrial footprint during the period when asbestos was a standard material in high-heat and high-wear applications. Industrial facilities of all kinds — manufacturing plants, power generation stations, refineries, and processing operations — relied on products of this type throughout much of the twentieth century. Asbestos was favored by manufacturers like Federal-Mogul/Ferodo because of its resistance to heat, friction, and chemical degradation, properties that made it commercially attractive before the full scope of its health hazards was publicly understood and regulated.
Federal-Mogul Corporation eventually filed for Chapter 11 bankruptcy protection in 2001, citing overwhelming asbestos liability claims stemming from decades of asbestos-containing product manufacturing. That bankruptcy proceeding resulted in the establishment of a trust structure to address asbestos injury claims, though litigation against related parties and product-specific claims have continued through the civil court system for products and exposures falling outside trust-administered compensation.
Asbestos Content
Litigation records document that Federal-Mogul/Ferodo incorporated asbestos fibers into products classified under designations such as the W-6 across its brake friction and pipe insulation product lines. In brake friction materials, chrysotile asbestos was the most commonly used fiber type, valued for its ability to withstand the intense frictional heat generated during braking. In some formulations, amphibole asbestos varieties — including amosite and crocidolite — were also used in industrial-grade friction products that demanded higher heat tolerance than standard automotive applications required.
For pipe insulation products, asbestos content served a different but related function: thermal regulation and fire resistance in environments involving steam pipes, boilers, and high-temperature industrial systems. Pipe insulation products from this era typically contained significant percentages of asbestos by weight, often combined with binding agents, calcium silicate, or other mineral materials. Plaintiffs alleged that the W-6 and comparable Federal-Mogul/Ferodo products contained asbestos in concentrations sufficient to release hazardous airborne fibers during ordinary installation, use, maintenance, and removal.
How Workers Were Exposed
Industrial workers generally represent the primary population documented in litigation records as having been exposed to asbestos through contact with W-6 and comparable Federal-Mogul/Ferodo products. The nature of exposure differed somewhat depending on whether the product was encountered in its brake friction form or as pipe insulation, but both use categories shared a common hazard: the release of respirable asbestos fibers into the breathing zone of workers.
Brake and Friction Applications
Workers involved in industrial brake maintenance and clutch servicing encountered asbestos-containing friction materials routinely. In industrial settings — as distinct from ordinary automotive garages — this work often involved heavy equipment, overhead cranes, conveyor systems, and large machinery with friction brakes subject to intense wear. Mechanics and maintenance technicians performing brake inspections, pad replacements, and drum resurfacing generated asbestos dust through grinding, sanding, blowing out brake assemblies with compressed air, and handling worn friction components. Plaintiffs alleged that these tasks produced airborne asbestos concentrations that exposed workers without adequate warning or protective equipment.
Pipe Insulation Applications
Insulators, pipefitters, boilermakers, and general maintenance workers in industrial facilities are documented in litigation records as having encountered asbestos-containing pipe insulation products consistent with the W-6 classification. The application and removal of pipe insulation was among the most hazardous asbestos-related tasks identified in occupational health research. Cutting, fitting, and trimming insulation sections to accommodate pipe configurations released fine asbestos fibers into enclosed or poorly ventilated spaces. Removal of old or damaged insulation — a process known as abatement or demolition work — was particularly dangerous because deteriorated asbestos insulation crumbles readily, releasing friable fiber clouds.
Workers who were not directly handling these products also faced exposure risks. In industrial environments, bystander workers in adjacent areas could inhale fibers disturbed by insulation or brake work underway nearby. Plaintiffs alleged that Federal-Mogul/Ferodo failed to provide adequate hazard warnings on its products and that the company possessed or should have possessed knowledge of asbestos health risks — including the links between asbestos inhalation and diseases such as mesothelioma, asbestosis, and lung cancer — well before such warnings became standard industry practice.
Asbestos-related diseases characteristically have latency periods of ten to fifty years between initial exposure and clinical diagnosis, meaning that workers exposed to W-6 and similar products during their peak production and use periods may be presenting with illness decades after the original contact occurred.