Blackmer Pumps and Asbestos Exposure: Manufacturer Reference

Company History

Blackmer Pumps is an American manufacturer historically known for producing sliding vane pumps, gear pumps, and related fluid-handling equipment for industrial, commercial, and marine applications. Operating out of Grand Rapids, Michigan, Blackmer built a long-standing reputation in industries that required reliable transfer of petroleum products, chemicals, and other liquids under demanding conditions. The company’s pumps were distributed broadly across American industry, appearing in refineries, chemical plants, marine vessels, power generation facilities, and a wide range of manufacturing environments throughout the mid-twentieth century.

During the decades when industrial pump technology was advancing rapidly — roughly the 1940s through the early 1980s — asbestos was a standard material in many mechanical sealing and insulation applications. Pump manufacturers across the industry routinely incorporated asbestos-containing components into their products, either through in-house manufacturing or through the use of third-party gaskets, packing, and sealing materials that were widely considered safe and industry-standard at the time. Blackmer Pumps operated within this same industrial and regulatory environment. According to asbestos litigation records, workers who handled or maintained Blackmer pumps during this era were potentially exposed to asbestos-containing components associated with those products.

Blackmer has operated through various corporate affiliations over its history. The company eventually became part of Dover Corporation, a diversified industrial conglomerate. This corporate background is relevant to individuals researching exposure history and legal options, as successor liability and corporate relationships can affect which legal entities may be named in asbestos-related claims.

Asbestos-Containing Products

Blackmer Pumps did not manufacture asbestos as a raw material, but according to asbestos litigation records, the company’s pump products were designed and sold with asbestos-containing internal components — most notably gaskets and packing materials — that were integral to the pumps’ functioning during the period of their manufacture and distribution.

Gaskets were among the most commonly identified asbestos-containing components associated with Blackmer pumps in litigation. Pump gaskets create fluid-tight seals between mating surfaces such as the pump housing, end plates, and flanged connections. During the era in question, compressed asbestos fiber (CAF) gaskets were standard throughout the pump industry. Plaintiffs alleged that Blackmer pumps were shipped from the factory with asbestos-containing gaskets in place and that replacement gaskets specified for Blackmer equipment were similarly composed of asbestos-containing materials.

Pump packing — also called shaft packing or gland packing — was another component identified in court filings. Braided or compressed asbestos packing was routinely used to seal rotating shafts in pumps, preventing leakage around the shaft where it exits the pump housing. Workers who installed, adjusted, or replaced this packing material were exposed to asbestos fibers in the process.

According to court filings, the hazard associated with these components was not limited to initial installation. Because gaskets and packing materials degrade over time under heat, pressure, and chemical exposure, they required periodic replacement. Each removal of a worn asbestos-containing gasket or packing set — a task that typically involved scraping, wire brushing, or cutting — generated airborne asbestos fibers. Plaintiffs alleged that this maintenance work, performed repeatedly over the working lives of mechanics and millwrights, represented a significant cumulative source of asbestos exposure.

Specific Blackmer pump models named in litigation have included sliding vane pumps used in petroleum transfer and chemical service, though the full range of products implicated varies across individual cases and jurisdictions. Individuals seeking to confirm whether a specific Blackmer pump model is associated with asbestos-containing components are encouraged to consult asbestos litigation records, product documentation from the relevant era, or an attorney with access to product identification databases.

Occupational Exposure

According to asbestos litigation records, exposure to asbestos-containing components associated with Blackmer pumps occurred across a broad range of industrial occupations and settings. The following worker categories appear with regularity in asbestos claims involving pump equipment of this type:

Pipefitters and Plumbers — Workers who installed or connected Blackmer pumps to piping systems frequently handled the gaskets at flanged connections. Cutting gaskets to fit, tightening connections, and breaking apart old flanged joints to replace failed gaskets were all tasks that could disturb asbestos-containing materials.

Mechanics and Millwrights — Maintenance personnel responsible for keeping pump equipment operational were among the most heavily exposed, according to plaintiffs’ allegations. Rebuilding a pump — disassembling the housing, extracting worn packing, scraping old gasket material, and reassembling with new components — put these workers in direct, repeated contact with asbestos-containing parts.

Petroleum and Refinery Workers — Blackmer sliding vane pumps were widely used in petroleum product transfer applications. Workers at refineries, bulk liquid terminals, and fuel distribution facilities who maintained this equipment were among those who appear in asbestos litigation records involving the company’s products.

Chemical Plant Workers — The chemical processing industry relied heavily on industrial pumps to move corrosive and hazardous fluids. Court filings document exposure claims from workers in chemical manufacturing environments where Blackmer pumps were in service.

Marine Industry Workers — Blackmer pumps were used aboard vessels and in marine transfer applications. Merchant mariners, shipyard workers, and vessel maintenance personnel may have encountered these products during their careers.

Bystander and Secondary Exposure — In some cases, asbestos litigation records reflect claims by workers who were not directly performing pump maintenance but worked in proximity to those who did. Asbestos fibers released during gasket scraping or packing removal can travel through a work area, potentially exposing nearby workers.

The period of heaviest documented exposure corresponds approximately to the 1940s through the early 1980s, consistent with the broader industrial use of asbestos-containing materials before regulatory action by the Occupational Safety and Health Administration (OSHA) and the Environmental Protection Agency (EPA) prompted a significant reduction in asbestos use across American industry. Blackmer Pumps is understood to have ceased use of asbestos-containing components in its products by approximately the early 1980s.

It should be noted that the latency period for asbestos-related diseases — including mesothelioma, asbestosis, and asbestos-related lung cancer — is typically between 20 and 50 years following initial exposure. Workers exposed to Blackmer pump components during the peak decades of asbestos use may only now be receiving diagnoses of asbestos-related illness.

Trust Fund / Legal Status

Blackmer Pumps is classified as a Tier 2 manufacturer for purposes of this reference site. This designation means that the company has been named as a defendant in asbestos-related personal injury litigation, but Blackmer has not established a dedicated asbestos bankruptcy trust fund. Accordingly, claims involving Blackmer pump products are not resolved through a trust fund claims process in the same manner as claims against companies that reorganized under Chapter 11 specifically due to asbestos liability.

Plaintiffs alleged in various asbestos cases that Blackmer Pumps bore responsibility for asbestos-containing components associated with its products and that the company knew or should have known of the health hazards posed by those components. Court filings document that these allegations have been litigated in multiple jurisdictions. Whether and to what degree Blackmer has faced adverse judgments, settlements, or other litigation outcomes varies by case; this article does not represent any specific outcome as established legal fact.

Because Blackmer has operated through corporate relationships — including its association with Dover Corporation — individuals pursuing legal claims may need to account for corporate succession and related legal questions when identifying appropriate defendants. An experienced asbestos attorney can assist in tracing corporate histories and identifying responsible parties.

For individuals who worked with Blackmer pumps and were also exposed to asbestos-containing products from other manufacturers — a common circumstance in industrial environments — separate trust fund claims may be available through those manufacturers’ established asbestos trusts. Exposure history is frequently complex, and workers in the industries described above may have valid claims through multiple channels.

If you or a family member worked with or around Blackmer pumps during the 1940s through the early 1980s and has since been diagnosed with mesothelioma, asbestosis, or asbestos-related lung cancer, legal options may be available.

Key points to understand:

  • Blackmer Pumps has been named in asbestos litigation, but does not operate an asbestos bankruptcy trust fund. Claims would be pursued through direct civil litigation rather than a trust claims process.
  • Corporate succession involving Dover Corporation and other entities may be relevant to identifying proper defendants.
  • Workers exposed to multiple asbestos-containing products — as was common in refineries, chemical plants, shipyards, and other industrial settings — may be eligible to file claims against multiple responsible parties, including manufacturers with established trust funds.
  • The long latency period for asbestos-related disease means that exposure from decades ago can give rise to claims today.
  • An attorney specializing in asbestos litigation can review your work history, identify relevant products and manufacturers, and advise on available legal remedies including civil lawsuits and trust fund claims from other manufacturers in your exposure history.

Documentation of your work history — including employers, job sites, job titles, and any product names or model numbers you can recall — is valuable when consulting with an attorney and should be preserved.