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Did you work with National Oilwell Mud Pump Piston Seals? According to publicly filed asbestos litigation records, it allegedly contained asbestos. Here is what it was, who was exposed, and who is responsible. National Oilwell Mud Pump Piston Seals, made by National Oilwell Varco, sold from the 1940s until 1985. Allegedly asbestos-packed piston and valve seals in National Oilwell triplex mud pumps exposed drilling-rig floormen and mechanics during pump repacking and rebuilds, according to publicly filed asbestos litigation records. Allegedly asbestos-fiber compression packing and asbestos-reinforced piston/valve seals in triplex mud pumps used on drilling rigs, according to publicly filed asbestos litigation records. Workers allegedly exposed around this product included Oilfield roughnecks, Drilling rig floormen, and Oilfield mechanics. Asbestos claims are brought against the companies that made the products. If you worked with or around National Oilwell Mud Pump Piston Seals and were later diagnosed with mesothelioma, asbestosis, or another asbestos-related disease, you may have a legal claim against the manufacturer. This is educational information from an independent publisher — not a law firm — and is not legal advice.
Product Description
National Oilwell (later National Oilwell Varco) triplex drilling mud pumps allegedly used asbestos-fiber compression packing on piston rods and asbestos-reinforced valve seals to contain high-pressure drilling mud, according to publicly filed asbestos litigation records. Rig hands allegedly repacked these mud pumps at the wellsite, cutting and installing braided asbestos packing rings by hand — a job that allegedly released respirable asbestos fibers directly at the pump.
Workers Exposed
Roughnecks, drilling rig floormen, and oilfield mechanics allegedly performed most of the mud-pump repacking and seal work. Toolpushers and drillers allegedly supervised the work in the immediate breathing zone. Rig maintenance crews allegedly cleaned out spent packing debris from pump housings during scheduled overhauls.
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If You Worked at National Oilwell Varco
If you or a family member worked at National Oilwell Varco and were exposed to asbestos-containing materials at this facility — and were diagnosed with mesothelioma, asbestosis, lung cancer, or another asbestos-related disease — you may have a legal claim. Time-sensitive filing deadlines apply.
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