Pumps, Valves & Gaskets Asbestos Exposure

Pumps, Valves and Gaskets and Historical Asbestos Use

Pumps and valves are used throughout steam, power, chemical, petroleum, marine, manufacturing and building systems to move or control liquids, gases and steam. Gaskets and packing create seals at flanges, access covers, valve stems, pump shafts and other joints.

Historically, some high-temperature and high-pressure sealing materials used asbestos because it could tolerate demanding service conditions. Potentially relevant asbestos-containing materials could be located at pump and valve flanges, around stems and shafts, inside packing glands, on access covers, or in connected piping systems.

The presence of older equipment does not prove asbestos exposure. The exact pump, valve, gasket or packing product, manufacturer, model, facility, service period and maintenance history should be evaluated whenever possible.

Materials That May Have Involved Asbestos

Depending on manufacturer, application and year, historical asbestos-containing materials associated with pumps, valves and gaskets may have included:

• compressed sheet flange gaskets;
• spiral-wound or composite gasket materials containing asbestos fillers;
• valve-stem packing;
• pump-shaft packing;
• rope packing and braided sealing materials;
• access-cover and manway gaskets;
• boiler and steam-equipment gaskets;
• heat-resistant tape or cloth used around piping joints;
• insulation surrounding pumps, valves or connected piping;
• gasket sheet stock cut on site;
• heat-resistant seals used in high-temperature service; and
• other specialty sealing materials selected for heat, pressure or chemical resistance.

Each product should be evaluated separately because a single pump or valve assembly can contain several materials with different asbestos histories.

How Asbestos Exposure Could Occur

A potential exposure pathway requires asbestos-containing material and work that disturbs it. Intact gaskets or packing may present a different exposure potential than materials that are brittle, scraped, cut, sanded or removed.

Potential disturbance could occur during tasks such as:

• removing old flange gaskets;
• scraping hardened gasket residue from metal surfaces;
• cutting replacement gaskets from sheet material;
• removing valve-stem packing;
• pulling packing from pump shafts;
• cutting braided rope or packing to size;
• servicing steam or process-system valves;
• repairing pumps during shutdowns or overhauls;
• removing insulated piping connected to pumps and valves; and
• cleaning dust and debris after gasket or packing work.

Actual exposure depends on asbestos content, material condition, disturbance method, frequency, duration, proximity, ventilation and controls.

Workers and Job Sites That May Have Encountered These Products

Workers who installed, maintained, repaired or removed historical pumps, valves and gasket systems may have encountered asbestos-containing materials if those products were present and disturbed. A job title alone does not establish exposure.

Potentially relevant occupations may include pipefitters, plumbers, steamfitters, boilermakers, millwrights, maintenance mechanics, machinists, refinery workers, shipyard workers, power-plant workers and industrial repair personnel.

Possible settings include power plants, refineries, chemical plants, factories, shipyards, naval vessels, commercial mechanical rooms, utility facilities and military installations.

Nearby workers may also be relevant when gasket scraping, packing removal or insulated piping work generated dust in shared work areas.

Maintenance, Repair and Replacement Risks

Flange gasket removal

Old gaskets can harden and adhere to flange surfaces. If a gasket contained asbestos, scraping or wire-brushing residue could disturb fibers.

Cutting sheet gaskets

Some maintenance departments historically cut replacement gaskets from sheet stock. If the sheet contained asbestos, cutting, punching or fitting the material could generate dust.

Valve packing replacement

Packing around valve stems may be removed with picks or other tools. When asbestos-containing packing was used, pulling and cutting it could release fibers.

Pump packing replacement

Pump shafts may use braided packing in stuffing boxes. Removing old asbestos-containing packing and cutting replacement rings could create exposure when such material was present.

System overhaul and demolition

Major shutdowns or equipment removal can disturb gaskets, packing, insulation and connected piping materials at the same time. Each possible source should be identified separately.

Evidence That May Identify Asbestos-Containing Components

Exposure reconstruction is strongest when evidence identifies the exact pump, valve, gasket or packing material, manufacturer, model, facility, service period and work performed.

Useful evidence may include:

• pump and valve manufacturer, model and serial numbers;
• equipment nameplates;
• parts catalogs and service manuals;
• gasket and packing part numbers;
• gasket-sheet brand or packaging information;
• piping and instrumentation diagrams;
• engineering specifications;
• purchase orders, invoices and supplier records;
• maintenance logs and work orders;
• shutdown and overhaul records;
• facility equipment inventories;
• historic photographs of equipment and work areas;
• asbestos surveys and abatement records;
• laboratory reports for surviving gasket, packing or insulation materials;
• employer, union or military records documenting assignments; and
• coworker or supervisor statements identifying products and tasks.

Testing and documentation should distinguish gaskets, packing, insulation, rope and nearby building materials whenever those products can be separately identified.

Medical and pathology records may document an asbestos-related diagnosis but do not establish which historical pump, valve, gasket or packing product was an exposure source.

Secondhand Exposure and Health Risks

If work with asbestos-containing gaskets or packing generated fibers that accumulated on clothing, shoes, tools or belongings, asbestos could potentially have been carried away from the job site. This is a possible secondhand exposure pathway, but family relationship alone does not establish exposure.

Asbestos exposure is associated with mesothelioma, asbestos-related lung cancer, asbestosis and other asbestos-related disease. Working around older pumps, valves or gaskets does not diagnose disease and does not establish individual medical causation.

Anyone concerned about historical occupational asbestos exposure should discuss their work history and health with a qualified healthcare professional.

Legal and Compensation Considerations

Depending on the evidence and circumstances, legal options may be available to a person diagnosed with an asbestos-related disease after documented exposure to a specific asbestos-containing gasket, packing or sealing product.

A legal review may consider equipment manufacturers, gasket or packing manufacturers, product suppliers, facility or vessel, service period, tasks performed, frequency and duration of exposure, diagnosis, jurisdiction and filing deadlines.

Identifying a pump or valve manufacturer does not automatically establish that it supplied an asbestos-containing gasket or packing material or that it is legally responsible. Liability is case-specific and depends on product evidence, exposure evidence and governing law.

Some matters may involve asbestos trust funds, but each trust has its own product, exposure and medical documentation requirements. Eligibility is not automatic, and compensation is not guaranteed.

Exposure that occurred decades ago does not by itself determine whether a claim is timely. Statutes of limitation and other deadlines vary by jurisdiction and circumstances and should be reviewed individually.

Pumps, Valves and Gaskets Asbestos Exposure FAQs

Did old pumps and valves contain asbestos?

Some historical pump and valve systems used asbestos-containing gaskets, packing or nearby insulation, while many equipment components did not contain asbestos.

Could flange gaskets contain asbestos?

Yes. Some historical flange gaskets and gasket-sheet products contained asbestos.

Could valve packing contain asbestos?

Some historical braided or molded valve packing materials contained asbestos.

Could pump packing contain asbestos?

Some historical pump-shaft packing used asbestos for heat and chemical resistance.

Can gasket removal release asbestos fibers?

Potentially, if an asbestos-containing gasket is scraped, sanded, cut or otherwise disturbed.

Can pipefitters or maintenance workers have asbestos exposure from these products?

Potentially, when their work involved asbestos-containing gaskets, packing, insulation or related materials. Job title alone does not prove exposure.

What evidence can identify asbestos-containing gaskets or packing?

Useful evidence can include part numbers, packaging, catalogs, invoices, manuals, maintenance records, laboratory reports and witness testimony.

Does working around old pumps or valves automatically qualify someone for compensation?

No. Legal eligibility depends on product identification, asbestos-content evidence, exposure history, diagnosis, jurisdiction and other case-specific facts. Compensation is not guaranteed.

For related information, see Machinery Products Asbestos Exposure, Boiler Products Asbestos Exposure, Steam Products Asbestos Exposure, Turbine Products Asbestos Exposure, Power Products Asbestos Exposure, Insulation Products Asbestos Exposure, and the main Asbestos Exposure in Products guide.

Get Help Reviewing Pump, Valve and Gasket Exposure

If you or a family member has been diagnosed with mesothelioma, asbestos-related lung cancer or another asbestos-related disease and you are trying to identify older pumps, valves, flange gaskets, packing or connected piping materials from a power plant, refinery, shipyard, industrial facility, vessel or military installation, we can help organize the product and exposure history that may be relevant.

Call 800.291.0963 to discuss what you remember about the equipment, gasket or packing brand, facility, vessel and work performed. Live chat is available 24/7, 365 days a year. Submit Your Case using the form below.

Prior exposure does not automatically establish a legal claim. Eligibility depends on the evidence, diagnosis, jurisdiction and other circumstances, and compensation is not guaranteed.

⚕️ Legal & Medical Information Disclaimer
This page provides general educational information and is not medical or legal advice. The information does not establish asbestos exposure, diagnosis, causation, liability, claim eligibility or compensation. Medical concerns should be discussed with a qualified healthcare professional, and legal questions should be reviewed with a qualified attorney.