Abex Railroad and Automotive Brake Linings

Product Description

Abex Corporation was a major American industrial manufacturer whose product lines spanned several decades of the twentieth century. Operating under various corporate names and through numerous subsidiaries, Abex produced brake linings and friction materials for both railroad rolling stock and automotive applications. These products were sold under the Abex brand and distributed widely throughout North American rail yards, manufacturing facilities, automotive repair shops, and vehicle assembly operations.

The company’s friction materials division manufactured brake shoes for freight and passenger rail cars, locomotive brake components, and automotive brake linings designed for passenger vehicles and commercial trucks. Abex brake products were considered standard industrial components during the mid-twentieth century and appeared across a broad range of transportation infrastructure. Railroad applications in particular demanded high-performance friction materials capable of withstanding extreme mechanical stress and heat generated during repeated braking of heavy rail equipment.

Abex Corporation underwent a series of corporate transactions over the decades, eventually becoming affiliated with Pneumo Abex LLC. The legacy of asbestos-containing brake products manufactured during the company’s operational history led to substantial litigation and ultimately the establishment of a dedicated asbestos settlement trust to compensate individuals harmed by exposure to those products.

Asbestos Content

Asbestos was widely incorporated into brake lining and friction material manufacturing throughout much of the twentieth century because of its exceptional heat resistance, tensile strength, and durability under friction. Chrysotile asbestos, along with other fiber types, was bonded into brake shoe compositions and lining materials to improve performance under the high-temperature conditions that braking systems routinely generated.

Abex brake linings and friction materials contained asbestos as a functional component of their composition. Trust fund documentation associated with the Pneumo Abex LLC Asbestos Settlement Trust acknowledges the asbestos-containing nature of these products and the exposure they created for workers who manufactured, installed, serviced, or handled them over the course of their working lives.

Asbestos fibers embedded in friction materials do not remain permanently inert. When brake linings wear during normal use, or when they are cut, ground, drilled, or otherwise machined during installation and service, asbestos fibers are released into the surrounding air. In occupational settings where ventilation was limited and dust controls were absent or inadequate, workers could be repeatedly exposed to elevated concentrations of airborne asbestos over extended periods.

How Workers Were Exposed

Workers across several industrial trades and occupational settings encountered Abex railroad and automotive brake linings in the course of their employment. The Pneumo Abex LLC Asbestos Settlement Trust recognizes industrial workers generally as among those potentially eligible to file claims based on documented exposure to Abex friction products.

Railroad workers were among the most heavily exposed populations. Car inspectors, carmen, brake shoe changers, and maintenance-of-way workers routinely handled worn brake shoes on freight and passenger equipment. Replacing brake shoes on rail cars involved physical contact with degraded friction material and generated visible dust in shop environments and open rail yards alike. Locomotive shop workers who serviced and overhauled braking systems on engines faced similar conditions.

Automotive mechanics and brake technicians who serviced vehicles equipped with Abex brake linings were exposed when removing worn linings, cleaning brake assemblies, and fitting new friction material. Common shop tasks such as blowing out brake drums with compressed air, grinding new linings to fit, and sanding or beveling brake shoes released asbestos dust directly into the breathing zone of the worker performing the task. In shop environments without effective local exhaust ventilation, that dust could remain suspended in the air for extended periods, exposing nearby workers as well.

Manufacturing workers employed at Abex facilities where brake linings were produced faced direct exposure during the mixing, pressing, molding, and finishing of friction materials. These workers handled raw asbestos fiber and worked in close proximity to production operations that generated substantial quantities of airborne dust throughout the manufacturing process.

Industrial maintenance personnel who serviced heavy machinery equipped with Abex friction components — including overhead crane brakes, industrial hoists, and other mechanical braking systems — also encountered asbestos-containing materials in the course of routine maintenance and repair work.

Exposure for many of these workers was not a single incident but rather a recurring occupational condition that extended across years or decades of employment. Medical and epidemiological evidence has established that repeated inhalation of asbestos fibers over time significantly elevates the risk of developing serious and often fatal diseases, including mesothelioma, asbestosis, lung cancer, and other asbestos-related conditions. These diseases typically have latency periods of twenty years or more, meaning that individuals exposed to Abex brake linings during the mid-twentieth century may not have received a diagnosis until decades after their last occupational contact with the product.

Documented Product Identification

The following details are drawn from public asbestos litigation records, manufacturer catalog pages, technical manuals, and corporate history materials. Each item reflects the product as documented in those sources.

Documented asbestos-use period: 1927-1987

Corporate context: Abex Corporation manufactured automotive and railroad friction products containing asbestos from approximately 1927 to 1987. The company operated under corporate parent Pneumo Abex Corporation, with service information handled through Prentice-Hall Corporation System, Inc. in Albany, NY.

Brand identification: Products branded under Abex name with various trade names including American Brake Materials, Brakeblok, American Eagle, Comet, and others; NAPA sold Abex products until 1969

Documented asbestos components: brake linings, brake shoes, clutch facings.

Documented asbestos-component suppliers: the public records lists the following external suppliers of asbestos-bearing packing, gaskets, and seals used in conjunction with this manufacturer’s equipment — Asbestos Corporation, Ltd. (Thetford Mines, Quebec), Bell Asbestos Mines, Ltd. (Thetford Mines, Quebec), GAF Corp. (Hyde Park, Vermont), Lake Asbestos (Black Lake, Quebec), Johns-Manville Corporation, Canadian Johns-Manville Corp. (Asbestos, Canada), Vermont Asbestos Group, Inc. (Hyde Park, Vermont), North American Asbestos Corporation.

Industries served: Automotive, Trucking, Railroad, Industrial.

Documented product lines:

  • ABEX 121 Super Brakes (1975-1987). Automotive brake linings containing chrysotile asbestos — asbestos components: brake linings.
  • Abex Brake Shoe (1943-1987). Automotive brake shoes containing chrysotile asbestos — asbestos components: brake shoes.
  • Abex BrakeBlok (1938-1987). Automotive brake block friction products — asbestos components: brake linings.
  • Abex Protector (1975-1987). Automotive friction products containing chrysotile asbestos — asbestos components: brake linings.
  • American Brake Materials (1930-1987). Automotive brake friction materials — asbestos components: brake linings.
  • American Brakeblok (1938-1987). Automotive brake block products — asbestos components: brake linings.
  • American Eagle (1974-1987). Automotive brake friction products containing chrysotile asbestos — asbestos components: brake linings.
  • Comet (1957-1977). Railroad brake shoes with friction material attached to steel backings containing approximately 5% chrysotile asbestos — asbestos components: brake shoes.

Abex automotive friction products contained approximately 25-70% chrysotile asbestos and were manufactured in Detroit, Michigan; Salisbury, North Carolina; and Winchester, Virginia. Railroad Comet brake shoes contained approximately 5% chrysotile asbestos.