McClure: Asbestos Pipe Insulation and Occupational Exposure History

McClure is among the industrial manufacturers that appear in asbestos litigation records in connection with pipe insulation products used on American jobsites during the mid-to-late twentieth century. According to asbestos litigation records, workers in trades such as pipefitting, plumbing, and mechanical insulation encountered McClure-branded products at industrial and commercial worksites during the peak decades of asbestos use in the United States. This reference article compiles available historical and legal documentation for workers, families, and legal professionals researching occupational asbestos exposure histories involving McClure products.

Company History

Detailed corporate history for McClure — including its founding date, ownership structure, and acquisition timeline — has not been fully established in publicly available records. What is documented is that McClure operated as a manufacturer or distributor of pipe insulation products in the United States during an era when asbestos was a standard component in thermal insulation materials. The company’s products appear in litigation records associated with industrial jobsites, suggesting a presence in commercial and industrial markets during roughly the 1950s through the early 1980s.

According to asbestos litigation records, McClure’s products were present on jobsites during the period when asbestos use in construction and industrial insulation materials was at its height. The company is understood to have ceased incorporating asbestos into its products at approximately the time of the broader industry-wide transition away from asbestos materials in the early 1980s, a shift driven in large part by tightening federal regulatory standards issued by the Environmental Protection Agency (EPA) and the Occupational Safety and Health Administration (OSHA).

The precise circumstances under which McClure exited the asbestos product market — whether through voluntary reformulation, regulatory compliance, or changes in corporate ownership — have not been confirmed in available public documentation.

Asbestos-Containing Products

Plaintiffs in asbestos personal injury litigation have alleged that McClure manufactured or supplied pipe insulation products containing asbestos during the mid-twentieth century. Pipe insulation was one of the most common product categories to incorporate asbestos during this era, owing to asbestos’s well-known properties as a thermal barrier and fireproofing agent.

Court filings document that pipe insulation of the type associated with McClure was used extensively in the insulation of steam lines, hot water systems, boiler feed lines, and other high-temperature piping systems found in power plants, refineries, shipyards, manufacturing facilities, hospitals, and large commercial buildings. Such products typically contained chrysotile asbestos, and in some formulations, amphibole fiber types including amosite, though the specific fiber composition of McClure-branded products has not been confirmed in publicly available technical documentation.

Plaintiffs alleged that McClure’s pipe insulation products released respirable asbestos fibers during routine handling, cutting, fitting, and removal — activities that were performed without adequate respiratory protection during the decades when the health hazards of asbestos were not yet widely communicated to workers in the field. According to asbestos litigation records, products of this type were frequently applied and disturbed by workers in close quarters, such as pipe chases, mechanical rooms, and ship engine compartments, where airborne fiber concentrations could reach dangerous levels without adequate ventilation.

The specific product names, catalog designations, or model numbers associated with McClure pipe insulation have not been confirmed in available public sources. Workers or their representatives researching exposure history may wish to consult trade catalogs, union records, or facility maintenance logs from the relevant period to identify specific product identifiers.

Occupational Exposure

According to asbestos litigation records, occupational exposure to McClure pipe insulation products is most frequently alleged by workers in the skilled trades, including:

  • Pipefitters and steamfitters, who applied and removed insulation from piping systems in industrial and commercial settings
  • Insulators (asbestos workers), whose trade involved the direct handling, cutting, and application of pipe covering and block insulation products
  • Plumbers, particularly those working on commercial and industrial hot water and steam systems
  • Boilermakers, who worked in close proximity to insulated piping in boiler rooms and utility plants
  • Sheet metal workers and HVAC mechanics, who frequently worked in shared spaces with pipe insulation trades
  • General laborers and helpers, who assisted insulation trades or performed cleanup work involving disturbed insulation debris
  • Maintenance and facility workers, who repaired or removed aging pipe insulation in older buildings and industrial plants

Court filings document that bystander exposure was a significant concern in occupational settings where pipe insulation work was performed. Workers in adjacent trades who did not directly handle insulation products could nonetheless inhale asbestos fibers that became airborne during cutting, fitting, or demolition of pipe covering materials. This pattern of secondary or bystander exposure is well-documented in asbestos litigation involving insulation products across the industry.

Plaintiffs have alleged that McClure products were present at a range of industrial facility types, consistent with the broad market for commercial pipe insulation during the mid-twentieth century. Facilities commonly identified in asbestos insulation litigation include oil refineries, chemical plants, steel mills, paper mills, naval and commercial shipyards, electric generating stations, and large institutional buildings including hospitals and universities.

Workers who handled or worked near pipe insulation products during the 1940s through early 1980s — the period during which asbestos-containing formulations were standard in the industry — may have sustained asbestos fiber exposure with potential long-term health consequences. Diseases associated with occupational asbestos inhalation include mesothelioma, asbestosis, lung cancer, and other asbestos-related conditions, typically with latency periods of 20 to 50 years between exposure and clinical diagnosis.

McClure does not appear to have established an asbestos bankruptcy trust fund. Unlike certain other manufacturers in the asbestos industry that reorganized under Chapter 11 bankruptcy and created Section 524(g) trusts to compensate claimants, McClure has not been identified in publicly available records as having followed this path.

According to asbestos litigation records, claims involving McClure have been pursued through the civil court system rather than through a trust fund claims process. Plaintiffs alleging exposure to McClure pipe insulation products have filed personal injury and wrongful death lawsuits in jurisdictions across the United States, asserting claims that typically include theories of negligence, strict product liability, and failure to warn.

Court filings document that asbestos product litigation involving pipe insulation manufacturers has been litigated extensively in federal and state courts for several decades. Individuals who believe they have been exposed to McClure products and who have subsequently been diagnosed with mesothelioma or another asbestos-related disease may wish to consult with an attorney experienced in asbestos litigation to evaluate available legal options.

Because no McClure asbestos trust fund has been identified, compensation options for affected individuals are more likely to involve direct civil litigation than trust fund claim submission. Legal counsel can assist in locating exposure documentation, identifying additional responsible parties whose trust funds may be eligible for claims submission, and assessing the strength of available evidence.

Workers and family members researching asbestos exposure involving McClure pipe insulation should be aware of the following:

No known trust fund. McClure does not appear to have established a Section 524(g) asbestos bankruptcy trust. Claims are pursued through civil litigation rather than an administrative trust claims process.

Civil litigation is the primary avenue. Plaintiffs alleging injury from McClure products have filed personal injury and wrongful death lawsuits in courts throughout the United States. An asbestos attorney can evaluate whether a civil claim is viable based on available exposure documentation and diagnosis.

Additional trust fund claims may be available. Individuals exposed to McClure products were frequently also exposed to asbestos-containing products from other manufacturers, many of whom have established bankruptcy trusts. An experienced asbestos attorney can assess potential claims against multiple defendants across the trust fund and litigation systems simultaneously.

Statutes of limitations apply. Legal deadlines for filing asbestos claims vary by state and by the date of diagnosis. Anyone considering a claim should consult an attorney promptly to avoid missing applicable filing deadlines.

Documentation is critical. Work history records, union membership records, Social Security earnings histories, and co-worker testimony can all serve as evidence of exposure site and product identification. Legal and medical teams specializing in asbestos cases can assist in gathering and preserving this documentation.

This article is compiled from publicly available asbestos litigation records, regulatory filings, and historical industry documentation. It is intended as a factual reference for workers, families, and legal professionals and does not constitute legal advice. Individuals seeking guidance on specific legal claims should consult a licensed attorney.