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Chemstone (Johns-Manville)

Documents in our library describe Chemstone (Johns-Manville) as “impregnated, chemically resistant asbestos cement sheets or slabs”.1 They give it as sold from 1934.1 They put its asbestos content at 45%.2 The asbestos named is chrysotile. Where the documents differ, each is listed below with its source.

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Asbestos claims

If you or a family member worked with or around Chemstone (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 Chemstone (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 1934-04”, said by Johns-Manville Corporation, as recorded by U.S. Patent and Trademark Office1
  • Description: “Impregnated, Chemically Resistant Asbestos Cement Sheets or Slabs”, said by Johns-Manville Corporation, as recorded by U.S. Patent and Trademark Office1

Johns-Manville Material Safety Data Sheet for CHEMSTONE (1976)

  • Asbestos content: “45”, p. 12
  • Asbestos fiber: “Chrysotile Asbestos Fiber”, p. 12
  • Description: “asbestos-cement sheet packing” (as of 1953, 1976), p. 673

Manville Fund's Responses to Plaintiffs' Interrogatories in Moore v. H.K. Porter (1990)

  • Made at: “Nashua Plant (1907 to 1985): Chemstone” (at Nashua) (the plant: Nashua, New Hampshire), p. 244
  • Asbestos content: “asbestos containing”, p. 244

Kind of product

We list Chemstone (Johns-Manville) with asbestos-cement pipe, board and sheet and gaskets and packing, from how the documents describe it. Those pages explain how such products exposed workers.

Trades that worked with products like it: Pipefitters and Plumbers, Millwrights, Machinists, and Industrial Mechanics, Carpenters and Construction Workers.

Other asbestos-cement pipe, board and sheet by Johns-Manville (119)

Flexboard · Thermobestos · Min-k · Asbestocel · Metal-on · Asbestos Sheathing · Asbestos Sponge (Felted, Sectional, Molded) · Asbestoside · C Asbestos Millboard · C Millboard · Carinsul · Cedargrain · Colorbestos · Colorceran · Colorchip · Colorlith · Colorlith Chalkboard · Colorsil · Corspan · Dekeran · and 99 more on the company's page

Asbestos-cement pipe, board and sheet by other makers (264)

Careytemp (Philip Carey) · Unibestos (Union Asbestos & Rubber Co.) · Unibestos (Pittsburg Corning) · Sal-mo (Nicolet) · Careycel (Philip Carey) · Careystone (Philip Carey) · Careystone Colonial Clapboard Siding (Philip Carey) · Cemesto (Celotex) · Cemesto Board (Celotex) · Cemesto Structural Insulating Panels (Celotex) · Century (Keasbey & Mattison) · Certa-Seal (CertainTeed) · China-Glaze (United States Gypsum) · Chrom-Tex (Keasbey & Mattison) · Chroma-Tex (Asbestone) · Chroma-Tone (National Gypsum) · Classic (Gold Bond Building Products (National Gypsum)) · Classic-Shake (National Gypsum) · Clipfast (GAF) · Color Ground (Ruberoid) · and 244 more: all asbestos-cement pipe, board and sheet

Other gaskets and packing by Johns-Manville (20)

Jewett · Spirotallic · Centripac · Railroad Brake Shoes · Sea Ring Packing · Chempac · 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 · Cumpac · 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) · Black Mastite (Aberdeen Industries) · Bronco (Janos Industrial Insulation) · Bulldog (Beldam Packing & Rubber Company) · C.W. (Chicago Wilcox) · Cabcock (Unarco) · Carey (Philip Carey) · Chemlon (Crane Packing) · Chesco (A. W. Chesterton) · Chesterton (A. W. Chesterton) · Chesterton 1000 (A. W. Chesterton) · Chesterton Packing Service (A. W. Chesterton) · Chesterton Sixty Four (A. W. Chesterton) · Cogasa (Rhopac) · Connectite (GAF) · Corbestos (Dana) · and 171 more: all gaskets and packing

See also

References

  1. USPTO trademark case files (Trademark Full Text XML Data, Annual Applications, 2025 edition) (August 25, 1943). Not yet published in our library.
  2. Johns-Manville Material Safety Data Sheet for CHEMSTONE (May 18, 1976), p. 1.
  3. Sourcebook on Asbestos Diseases: Medical, Legal, and Engineering Aspects, Volume Two (1986), p. 67. Not yet published in our library.
  4. Manville Fund's Responses to Plaintiffs' Interrogatories in Moore v. H.K. Porter (February 15, 1990), p. 24.

Mentioned on this site

Cite this page

“Chemstone (Johns-Manville).” AsbestosClaims.Law Library. https://asbestosclaims.law/library/products/johns-manville-chemstone.

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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.