Documents in our library describe Cumpac (Johns-Manville) as “molded packing composed of asbestos and a bonding compound for mechanical equipment including rods, shafts, plungers, and valve stems”.1 They give it as sold from 1938.1
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Asbestos claims
If you or a family member worked with or around Cumpac (Johns-Manville) and later developed mesothelioma or another asbestos disease, a claim may be paid by the Manville Personal Injury Settlement Trust. Free case review.
What each document says
Every statement about Cumpac (Johns-Manville) in the documents, in each document's own words.
USPTO trademark case files (Trademark Full Text XML Data, Annual Applications, 2025 edition)
- Sold from: “first used in commerce 1938-09-06”, said by JOHNS-MANVILLE CORPORATION, as recorded by U.S. Patent and Trademark Office1
- Description: “MOLDED PACKING COMPOSED OF ASBESTOS AND A BONDING COMPOUND FOR MECHANICAL EQUIPMENT INCLUDING RODS, SHAFTS, PLUNGERS, AND VALVE STEMS”, said by JOHNS-MANVILLE CORPORATION, as recorded by U.S. Patent and Trademark Office1
Kind of product
We list Cumpac (Johns-Manville) with gaskets and packing, from how the documents describe it. That page explains how such products exposed workers.
Trades that worked with products like it: Pipefitters and Plumbers, Millwrights, Machinists, and Industrial Mechanics.
Other gaskets and packing by Johns-Manville (20)
Jewett · Spirotallic · Centripac · Railroad Brake Shoes · Sea Ring Packing · Chempac · Chemstone · Mobilene Sheet Packing · No. 60 Service Sheet · 101 Mobilene Sheet · C Asbestos Millboard · Kearsarge · No. 100 Kearsarge Sheet · No. 118 Kearsarge Gaskets · Superheat · Tadpole · Bellowseal · Goetze Metallic Gaskets · Locklube Packings · Style 869
Gaskets and packing by other makers (191)
Sal-mo (Nicolet) · Flexatallic (Flexatalic Gasket Corp.) · Aztec (Asbestos Textile Co.) · Mintex (British Belting & Asbestos) · Ring packing (Garlock) · Chesterton 1000 (A. W. Chesterton) · Chesterton Packing Service (A. W. Chesterton) · Chesterton Sixty Four (A. W. Chesterton) · Cogasa (Rhopac) · Connectite (GAF) · Corbestos (Dana) · Cranite (Crane) · Cutno (Greene Tweed & Co.) · Degussa (Deutsche Gold- & Silber-Scheideanstalt) · Dixie (Raybestos-Manhattan) · Everoid (Hermetic Materials Ltd.) · Excelite (Beldam Packing & Rubber Company) · F.O.P. (Uniroyal) · Felbestos (Fel-Pro) · Firefly (Turner Brothers Asbestos) · and 171 more: all gaskets and packing
See also
- Johns-Manville: the company's history, documents, people, products and plants
- Johns-Manville on our products page: what the documents say about the company's asbestos products, with sources
References
- USPTO trademark case files (Trademark Full Text XML Data, Annual Applications, 2025 edition) (November 16, 1944). Not yet published in our library.
Cite this page
“Cumpac (Johns-Manville).” AsbestosClaims.Law Library. https://asbestosclaims.law/library/products/johns-manville-cumpac.
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This page is provided for general informational purposes and does not constitute legal advice. Every asbestos case turns on its own facts, exposure history, diagnosis, deadlines, available evidence, and applicable law. Reviewing this page does not create an attorney-client relationship. For advice about your specific situation, call 833-4-ASBESTOS for a free case review.