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Superex-m (Johns-Manville)

Superex M was a Johns-Manville high-temperature insulation.1,2 A 1990 EPA notice that published what Manville reported describes Superex M and Superex 1900 together as "grey-white pipe covering and block forms, used for high temperature insulation," produced from 1922 to 1972.1 An insurance company's 1981 list of asbestos products, compiled from other companies' answers in lawsuits, gives different years: it lists Superex M as pipe covering, block and cement, made from 1902 to 1970.2

The Navy's qualified products list QPL-2781 listed Superex M, Grade III, Class e, Type II, from Johns-Manville Sales Corp. of New York, with its plant at Waukegan, Illinois; it appears in the November 1957 edition and is still there in May 1969.3 Those listings say nothing about asbestos.3

The 1990 notice gives one set of figures for Superex M and Superex 1900 together: asbestos fibers, 8 to 14%; celite, 55 to 60%; and magnesia, 25 to 35%.1

Related: Superex and Superex 1900.

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Asbestos claims

If you or a family member worked with or around Superex-m (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 Superex-m (Johns-Manville) in the documents, in each document's own words.

Asbestos; Publication of Identifying Information (1990)

  • Made from: “produced 1922 to 1972”, said by Manville Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 141
  • Made until: “produced 1922 to 1972”, said by Manville Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 141
  • Asbestos content: “asbestos fibers, 8 to 14%”, said by Manville Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 141
  • Description: “grey-white pipe covering and block forms, used for high temperature insulation”, said by Manville Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 141
  • Ingredient: “celite, 55 to 60%; magnesia, 25 to 35%”, said by Manville Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 141

The Travelers Insurance Company's Product Information Booklet for Its Asbestos Seminar (1980–1981)

  • Made from: “02”, p. 82
  • Made until: “70”, p. 82
  • Form: “PIPE,BLOCK,CEMENT”, p. 82

Military Qualified Products List (1951–1995)

  • Description: “qualified under QPL-2781 as Superex M, Grade III, Class e, Type II (QPL-2781-11)” (as of 1957-11-13), p. 333
  • Made at: “Plant: Waukegan, Ill.” (as of 1957-11-13) (the plant: Waukegan, Illinois), p. 333
  • Description: “qualified under QPL-2781 as Superex M, Grade III, Class e, Type II (QPL-2781-36)” (as of 1969-05-27), p. 1073

Manville Fund's Answers to Interrogatories in Gunn v. Celotex (1989)

  • Made from: “Date Manufactured: 1930”, p. 1224
  • Warning label: “Date Labeled: 1965”, p. 1224
  • Change: “replaced by asbestos free SUPEREX 1600 in 1973”, p. 714
  • Asbestos content: “asbestos containing”, p. 634
  • Form: “Sheet/Block, Pipe Insulation”, p. 1224
  • Temperature limit: “for service up to 1600 degrees F”, p. 714
  • Asbestos fiber: “Chrysotile and/or Amosite”, p. 1224
  • Made until: “Date Discontinued: 1971”, p. 1224
  • Description: “A high temperature insulation ... made from asbestos fiber, diatomaceous silica, and other insulating materials”, p. 714
  • Asbestos fiber: “Chrysotile and/or Amosite”, p. 1224
  • Made at: “Manville Plant, Manville, New Jersey (1913 through 1985): Superex M Block; Superex M Pipe Covering” (at Manville) (the plant: Manville, New Jersey), p. 634
  • Asbestos content: “8.4 - 15.0 % fiber by weight”, p. 1224

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

  • Change: “SUPEREX-M replaced by non-asbestos SUPEREX-1600, 1971/73”, p. 175
  • Asbestos content: “asbestos containing (thermal insulation product)”, p. 175
  • Made at: “Waukegan Plant (1922 to 1985): Superex M Block; Superex M Pipe Covering” (at Waukegan) (the plant: Waukegan, Illinois), p. 285
  • Made at: “Manville Plant (1913 to 1985): Superex M Block; Superex M Pipe Covering” (at Manville) (the plant: Manville, New Jersey), p. 235
  • Description: “pipe, block” (as of 1930-1970), p. 1146

Kind of product

We list Superex-m (Johns-Manville) with pipe covering and block insulation, insulating cement and coatings and asbestos-cement pipe, board and sheet, from how the documents describe its form. Those pages explain how such products exposed workers.

Trades that worked with products like it: Insulators and Insulation Workers, Pipefitters and Plumbers, Boilermakers, Carpenters and Construction Workers.

Other pipe covering and block insulation by Johns-Manville (60)

Thermobestos · Superex · Asbestocel · 85 Magnesia · Thermobestos pipe covering · Safety Blow-Off Covering · Silicated Thermobestos · Sonite · Standard Sectional Covering · Super Fire Felt · Superex 2000 · Superex-1900 · Superex-sg · Therm-o-bestos · Thermo Fire Felt · Thermowrap · Train Pipe Covering · Vitribestos · Vitro Fire Felt · White Surface Asbestos Jacket · and 40 more on the company's page

Pipe covering and block insulation by other makers (216)

Careytemp (Philip Carey) · Kaylo (Owens-Corning) · Unibestos (Union Asbestos & Rubber Co.) · Kaylo (Owens-Illinois) · Unibestos (Pittsburg Corning) · Super Caltemp (Fibreboard) · Super Cell (Ruberoid) · Super Insutape (Unarco) · Super Insutape (Union Asbestos & Rubber Co.) · Super Unibestos (Unarco) · Super-light (Philip Carey) · Super-Light 85% Magnesia (Philip Carey) · Temp-check (Philip Carey) · Tempcheck (Philip Carey) · Therm-O-Flake (Illinois Clay Products) · Thermalite (Keene) · Thermalite 85% Magnesia (Baldwin-Ehret-Hill) · Thermalite 85% Magnesia (Ehret Magnesia Manufacturing Co.) · Thermasil (Baldwin-Ehret-Hill) · Thermasil (Ehret Magnesia Manufacturing Co.) · and 196 more: all pipe covering and block insulation

Other insulating cement and coatings by Johns-Manville (51)

Thermobestos · Superex · Asbestile · 85 Magnesia · 302 · Laptite Cement · Mx-3808 Asb Filler · Mx-3808 Asbestos Filler · Navy 450 Cement · No. 302 Insulation Cement · Superex Cement · Superex Cement for Navy · Thermobestos Cement · Thermomix 700 · Thermomix 720 · Thermomix 770 · Thermomix 810 · 0352 Cement · 300 Cement · 301 · and 31 more on the company's page

Insulating cement and coatings by other makers (273)

Prasco (Fibreboard) · Calsilite (GAF) · Caltemp (Fibreboard) · Sal-mo (Nicolet) · Super 66 (Eagle-Picher) · Super 711 (Combustion Engineering) · Super Caltemp (Fibreboard) · Super Finish (Combustion Engineering) · Super Powerhouse (Keene) · Super Stic-tite (Combustion Engineering) · Super-light (Philip Carey) · Super-Light Cement (Philip Carey) · Swetcheck (Eagle-Picher) · T-60 (Combustion Engineering) · Temp-Sure I-c 250 (Insul-Coustic) · Tempcheck (Philip Carey) · Thermalcoat (M. H. Detrick) · Thermalite (Keene) · Thermalite 85% Magnesia (Baldwin-Ehret-Hill) · Thermalkote (Flintkote) · and 253 more: all insulating cement and coatings

See also

References

  1. Asbestos; Publication of Identifying Information (February 13, 1990), p. 14.
  2. The Travelers Insurance Company's Product Information Booklet for Its Asbestos Seminar (1980–1981) (April 30, 1981), p. 8.
  3. Military Qualified Products List (1951–1995) (November 13, 1957), pp. 33, 107.
  4. Manville Fund's Answers to Interrogatories in Gunn v. Celotex (December 7, 1989), p. 122.
  5. Manville Fund's Responses to Plaintiffs' Interrogatories in Moore v. H.K. Porter (February 15, 1990), p. 17.
  6. Sourcebook on Asbestos Diseases: Medical, Legal, and Engineering Aspects, Volume Two (1986), p. 114. Not yet published in our library.

Cite this page

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

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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.