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Calcium Silicate (Unarco)

Documents in our library describe Calcium Silicate (Unarco) as “block and pipe covering”.1 They give it as made 1957–1970.2 It was rated for temperatures up to 1200 °F.1 Where the documents differ, each is listed below with its source.

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What each document says

Every statement about Calcium Silicate (Unarco) in the documents, in each document's own words.

Union Carbide Chemicals Company: Thermal Insulation and Accessories Manual (1962)

  • Form: “Block and Pipe Covering”, p. 781
  • Temperature limit: “Atmos to 1200”, p. 781
  • Description: “Hydrous calcium silicate reinforced with a small amount of asbestos fibers. Good compressive strength. Rigid.”, p. 781
  • Asbestos content: “Hydrous calcium silicate reinforced with a small amount of asbestos fibers”, p. 781

Travelers Asbestos Products Printout, July 1981

  • Made from: “57”, p. 182
  • Form: “PIPECOVER & BLOCK”, p. 182
  • Made until: “70”, p. 182

Asbestos Magazine, 1958, October 1958

  • Description: “UNARCO Calcium Silicate Pipe Covering and Block”, p. 413

Military Qualified Products List (1951–1995)

  • Use: “qualified under MIL-I-2781, Insulation Pipe Covering, Thermal (Grade II Class d)” (sales to U.S. military (MIL-I-2781)), p. 554
  • Made at: “Mundet Cork Corp., 7101 Tonnelle Ave., North Bergen, N.J. (Manufacturer); Union Asbestos and Rubber Co. (Distributor)” (as of 1959-02-25), p. 554

Kind of product

We list Calcium Silicate (Unarco) with pipe covering and block insulation, from how the documents describe its form. That page explains how such products exposed workers.

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

Other pipe covering and block insulation by Unarco (8)

Wovenstone · Insutape · Insutube · Super Insutape · Super Unibestos · Unibestos 1200 · Unibestos 750 · New Improved Insutape

Pipe covering and block insulation by other makers (268)

Thermobestos · Superex (Johns-Manville) · Careytemp (Philip Carey) · Kaylo (Owens-Corning) · Unibestos (Union Asbestos & Rubber Co.) · Asbestos Sponge Felt (Nicolet) · Asbestos Sponge Felt (Ruberoid) · Atlasite (Atlas Asbestos) · Best Felt (Armstrong Cork) · Best Felt (Keasbey & Mattison) · Bestfelt (Nicolet) · Cal Temp (Pabco Products) · Calsilite (GAF) · Calsilite (Ruberoid) · Calsilite Insulation Cement (GAF) · Calsilite-H1 (Ruberoid) · Calsilite-Hi (GAF) · Caltemp (Fibreboard) · Caltemp Cement (Fibreboard) · Caltherm (Fibreboard) · and 248 more: all pipe covering and block insulation

See also

  • Unarco: the company's history, documents, people, products and plants
  • Unarco on our products page: what the documents say about the company's asbestos products, with sources

References

  1. Union Carbide Chemicals Company: Thermal Insulation and Accessories Manual (October 1, 1962), p. 78.
  2. Travelers Asbestos Products Printout, July 1981 (July 1, 1981), p. 18.
  3. Asbestos Magazine, 1958, October 1958 (October 1, 1958), p. 41.
  4. Military Qualified Products List (1951–1995) (February 25, 1959), p. 55.

Cite this page

“Calcium Silicate (Unarco).” AsbestosClaims.Law Library. https://asbestosclaims.law/library/products/unarco-calcium-silicate.

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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.