KR 1202/1204 M/C Brick — Kaiser-Gypsum

Product Description

The KR 1202 and KR 1204 M/C Brick were industrial insulation products manufactured by Kaiser-Gypsum Company, Inc. These bricks were engineered for high-temperature applications, providing thermal insulation around pipes and other industrial equipment that operated under extreme heat conditions. The “M/C” designation indicated their suitability for use in mechanical and chemical processing environments, where reliable heat retention and resistance to thermal shock were essential to safe and efficient plant operations.

Kaiser-Gypsum was a subsidiary of Kaiser Industries, a major industrial conglomerate with operations spanning construction materials, metals, and engineered products throughout much of the twentieth century. The company supplied a broad range of building and industrial materials to commercial, industrial, and manufacturing markets across the United States. The KR 1202 and KR 1204 bricks were part of a product line developed to meet the demanding insulation requirements of industrial facilities, including power generation plants, chemical refineries, and manufacturing operations where high-temperature pipe systems were commonplace.

These formed insulation bricks were designed to be fitted directly around pipe sections, providing a snug, contoured fit that maximized thermal performance. The rigid brick format allowed for straightforward installation and replacement during maintenance cycles, making them a practical choice for industrial maintenance crews and insulation contractors working in demanding facility environments.

Asbestos Content

The KR 1202 and KR 1204 M/C Brick products contained chrysotile asbestos as a component of their material composition. Chrysotile, commonly referred to as white asbestos, is the most widely used form of asbestos in commercial and industrial products throughout the twentieth century. It belongs to the serpentine mineral family and is characterized by its long, curly fiber structure.

Although chrysotile was historically promoted by some industry representatives as less hazardous than the amphibole varieties of asbestos — such as amosite and crocidolite — scientific and regulatory consensus has firmly established that chrysotile is a known human carcinogen. The International Agency for Research on Cancer (IARC), the U.S. Environmental Protection Agency (EPA), and the Occupational Safety and Health Administration (OSHA) all classify chrysotile asbestos as a Group 1 carcinogen capable of causing mesothelioma, asbestosis, and lung cancer when fibers are inhaled.

In insulation bricks of this type, chrysotile fibers were typically incorporated into the product matrix during manufacturing to enhance tensile strength, thermal stability, and structural integrity at elevated temperatures. The fibers helped the brick maintain its form and insulating properties under the mechanical and thermal stresses common in industrial pipe systems. This binding and reinforcing function meant that asbestos was an integral structural component of the finished product rather than a surface treatment or minor additive.

How Workers Were Exposed

Litigation records document that industrial workers who handled, installed, removed, or worked in proximity to KR 1202 and KR 1204 M/C Bricks faced potential exposure to airborne chrysotile asbestos fibers. The physical nature of these products — rigid, formed insulation bricks — meant that cutting, fitting, breaking, or trimming them to accommodate pipe configurations would have released asbestos-containing dust into the surrounding work environment.

Plaintiffs alleged that exposure occurred across multiple stages of the product lifecycle. During initial installation, workers would cut and shape the bricks to fit specific pipe diameters and configurations, generating fine particulate dust that could remain suspended in the air for extended periods. In facility maintenance and repair operations, existing insulation bricks were frequently broken away, disturbed, or removed entirely to access underlying pipe sections, a process that litigation records document as particularly likely to release significant quantities of fiber-laden dust.

Industrial workers generally — including pipe insulators, millwrights, boilermakers, pipefitters, and general maintenance personnel — could encounter these products in the course of routine facility operations. Workers in power plants, chemical processing facilities, refineries, and heavy manufacturing environments were among those most likely to have come into contact with Kaiser-Gypsum pipe insulation products during installation and maintenance activities.

Plaintiffs alleged that bystander exposure was also a significant concern in industrial settings, where multiple trades often worked simultaneously in confined or poorly ventilated spaces. A worker performing tasks unrelated to insulation could nonetheless inhale asbestos fibers disturbed by nearby insulation work. In enclosed industrial environments — boiler rooms, pipe chases, and equipment rooms — airborne fibers could accumulate rapidly and persist without adequate ventilation controls.

OSHA regulations now require rigorous engineering controls, respiratory protection, and work practice standards when disturbing asbestos-containing materials. However, for much of the period when Kaiser-Gypsum insulation products were in active use, such protective requirements either did not exist or were not consistently enforced, and litigation records document that workers frequently performed insulation tasks without respiratory protection or adequate contamination controls.

Kaiser-Gypsum Company, Inc. has been the subject of asbestos-related litigation. Litigation records document claims brought by industrial workers who alleged occupational exposure to asbestos-containing products manufactured and distributed by the company, including pipe insulation products in the KR series. Plaintiffs alleged that Kaiser-Gypsum knew or should have known of the hazards associated with chrysotile asbestos in its products and failed to provide adequate warnings to workers who used or were exposed to those products.

Unlike some asbestos manufacturers that established dedicated asbestos bankruptcy trusts under Section 524(g) of the U.S. Bankruptcy Code, Kaiser-Gypsum does not currently maintain a publicly documented active trust fund specifically designated for asbestos claimants in the same manner as Tier 1 trust products. However, the asbestos litigation landscape can be complex, and successor liability, insurance coverage, and evolving corporate reorganization proceedings may affect the legal remedies available to affected workers.

Individuals who believe they were exposed to KR 1202/1204 M/C Brick or other Kaiser-Gypsum insulation products and who have received a diagnosis of mesothelioma, asbestos-related lung cancer, or asbestosis should consult with a qualified asbestos litigation attorney. An experienced attorney can evaluate available legal options, identify all potentially responsible parties across an individual’s full work history, and determine whether any applicable insurance assets, ongoing litigation pathways, or related trust funds may be accessible.

Workers in industrial settings often encountered products from many manufacturers during their careers, and multiple legal avenues may be available simultaneously. Maintaining records of employers, job sites, and any product names or manufacturers recalled from the workplace can be valuable in supporting a claim.

This article is provided for informational and reference purposes. It is not legal advice. Individuals seeking legal counsel regarding asbestos exposure should contact a licensed attorney with experience in asbestos litigation.