Armatemp Cement No. 10

Product Description

Armatemp Cement No. 10 was a high-temperature insulating cement manufactured by Armstrong Contracting and Supply Corporation, commonly known as A-C-and-S, during the period from 1962 to 1974. The product was designed and marketed as a pipe insulation material capable of withstanding elevated operating temperatures in industrial environments. Insulating cements of this type were applied as a finishing coat or base layer over pipe systems, fittings, valves, and irregular surfaces where pre-formed insulation could not be easily fitted.

Armatemp Cement No. 10 belonged to a class of industrial materials that were widely used in power generation facilities, petroleum refineries, chemical processing plants, and heavy manufacturing operations throughout the mid-twentieth century. These settings demanded materials that could maintain structural integrity and thermal performance under sustained heat and mechanical stress. The product was typically mixed with water on-site to create a workable paste, which was then troweled or hand-applied directly onto pipe surfaces and allowed to cure.

A-C-and-S was a major supplier of insulation products and contracting services to American industry during the postwar decades. The company distributed products across numerous industrial sectors, and Armatemp Cement No. 10 appeared in worksites throughout the country during the twelve years it was in production.

Asbestos Content

Armatemp Cement No. 10 was formulated with chrysotile asbestos as a primary constituent. Chrysotile, sometimes referred to as white asbestos, is a serpentine mineral fiber that was extensively used in insulation cements, fireproofing compounds, and thermal products because of its flexibility, tensile strength, and resistance to heat degradation.

In insulating cements of this era, asbestos fiber served multiple functional roles. It provided structural reinforcement within the dried cement matrix, improved adhesion to pipe surfaces, and enhanced the product’s ability to resist cracking under thermal cycling. Chrysotile’s binding properties also allowed manufacturers to achieve smooth, dense coatings that were both thermally efficient and mechanically durable.

Although chrysotile is generally regarded as less biopersistent than amphibole asbestos varieties such as amosite or crocidolite, scientific and regulatory consensus establishes that all forms of asbestos can cause serious disease when fibers are inhaled. The U.S. Environmental Protection Agency, the National Institute for Occupational Safety and Health, and the International Agency for Research on Cancer have each classified chrysotile as a known human carcinogen. The diseases associated with asbestos inhalation — including mesothelioma, asbestosis, and lung cancer — can have latency periods of twenty years or more following initial exposure, meaning workers exposed to Armatemp Cement No. 10 during the 1960s and early 1970s may only have received diagnoses in subsequent decades.

How Workers Were Exposed

Industrial workers were the primary population exposed to Armatemp Cement No. 10 during its period of production and use. Exposure pathways were closely tied to the physical tasks involved in mixing, applying, finishing, and removing the product in occupational settings.

Dry mixing was among the most hazardous stages of working with insulating cements. When workers opened bags of Armatemp Cement No. 10 and transferred the dry powder into mixing containers, fine asbestos-containing dust was released into the surrounding air. In confined or poorly ventilated areas — conditions common in industrial facilities of the era — this dust could remain airborne for extended periods, creating a prolonged inhalation risk.

Application work also generated significant fiber release. Troweling and hand-packing the mixed cement onto pipe surfaces, fittings, and irregular contours disturbed the wet material and could cause additional fiber dispersion, particularly as the cement began to stiffen or when workers shaped and smoothed the surface. Workers applying cement overhead or in enclosed pipe chases faced especially concentrated exposure.

Maintenance and repair activities created additional exposure opportunities. When existing cement coatings were chipped, scraped, or broken away to access underlying pipe components, the dried and hardened material fractured and released asbestos fibers into the work environment. Insulators, pipefitters, boilermakers, and maintenance workers who routinely performed or worked nearby during such activities could inhale these fibers without direct knowledge of the product’s composition or the associated health risks.

Bystander exposure was also a documented concern in industrial settings. Workers in adjacent trades — operators, laborers, supervisors, and others who shared workspace with insulation crews — could inhale airborne fibers generated by mixing and application work even when they were not directly handling the product.

Armatemp Cement No. 10 does not have an associated asbestos bankruptcy trust fund. A-C-and-S did file for bankruptcy protection, and the Armstrong World Industries Asbestos Personal Injury Settlement Trust was established through related proceedings; however, eligibility for that trust is tied to specific product and exposure criteria. Individuals who worked with or around Armatemp Cement No. 10 specifically should consult with an asbestos litigation attorney to determine whether their exposure history qualifies under applicable trust criteria or other legal avenues.

For claims that fall outside available trust fund processes, civil litigation remains the documented pathway for seeking compensation. Litigation records document that plaintiffs diagnosed with mesothelioma, asbestosis, and asbestos-related lung cancer have brought claims arising from exposure to A-C-and-S insulation products, including insulating cements used in industrial settings. Plaintiffs alleged that A-C-and-S knew or should have known of the health hazards associated with chrysotile asbestos in its products and failed to adequately warn workers of those risks.

Litigation records further document that plaintiffs alleged negligence in product design and formulation, failure to warn of known carcinogenic hazards, and in some cases fraudulent concealment of internal knowledge regarding asbestos health effects. Co-defendant claims against other product manufacturers, premises owners, and general contractors have also appeared in litigation arising from industrial pipe insulation exposures.

Workers who were employed in power generation, oil refining, chemical manufacturing, or other heavy industrial settings between 1962 and 1974 and who handled or worked near pipe insulation activities may have encountered Armatemp Cement No. 10. Those subsequently diagnosed with mesothelioma, asbestosis, lung cancer, or other asbestos-related conditions should document their work history with as much specificity as possible — including employers, job sites, specific products observed or handled, and the names of co-workers who may corroborate exposure — before seeking legal counsel.

Statutes of limitations for asbestos claims vary by state and generally begin running from the date of diagnosis rather than the date of exposure. Prompt consultation with an attorney experienced in asbestos litigation is advisable to preserve legal rights and assess all available compensation options.