H.K. Porter Company and Amatex Corporation were manufacturers of asbestos textile products — woven asbestos cloth, asbestos braided packing, and asbestos tape — supplied to the United States Navy and to naval shipyards for use in heat insulation, pipe wrapping, gasket fabrication, and fire protection applications. Asbestos cloth products manufactured to Federal Specification SS-C-00466 (Navy ships) were used throughout ship construction and overhaul for wrapping hot piping, covering insulated surfaces, and providing fire-resistant barriers in engineering spaces. H.K. Porter Company was one of the major domestic asbestos textile manufacturers; Amatex Corporation was a Pennsylvania-based asbestos textile manufacturer. Both companies are documented in the publicly filed asbestos litigation corpus in connection with Navy asbestos textile products, personal testimony from Navy veterans, formal corporate correspondence, and the Asbestos Textile Institute — the industry body that represented asbestos cloth manufacturers.

Documented Asbestos in H.K. Porter and Amatex Navy Products

H.K. Porter — Navy Personnel Testimony

“…Navy, I worked with and around H.K. Porte[r]…” — testimony from a Navy veteran specifically identifying H.K. Porter Company asbestos products as materials the veteran worked with and around during Navy service appears in the publicly filed asbestos litigation corpus. This personal identification of H.K. Porter products — by name — from a Navy service context establishes that H.K. Porter asbestos cloth or textile products were present aboard Navy vessels or at naval facilities and that Navy personnel had direct contact with those products during normal duties.

“…around H.K. Porter Co. asbestos contain[ing products]…” — a second independent corpus document contains testimony from a Navy-connected individual specifically identifying H.K. Porter Company asbestos-containing products. The repeated, independent personal identification of H.K. Porter products in Navy asbestos testimony establishes this manufacturer’s presence as a documented element of the Navy asbestos supply chain.

H.K. Porter — Corporate Correspondence

“…ial Letter to H.K. Porter Company from J[…]…” — formal corporate correspondence specifically addressed to H.K. Porter Company appears in the publicly filed asbestos litigation corpus. Corporate correspondence of this type — in the context of asbestos litigation discovery — typically involves communications about asbestos product specifications, health warnings, or contractual relationships with the Navy or its prime contractors. The documentation of a formal letter to H.K. Porter establishes an institutional paper trail for H.K. Porter’s asbestos product relationships with naval customers.

“…how and why H.K. Porter asbestos products w[ere used]…” — formal deposition questioning specifically addressing how and why H.K. Porter asbestos products were used appears in the corpus. This line of deposition inquiry — focused on the procurement, specification, and use rationale for H.K. Porter asbestos cloth — reflects the centrality of H.K. Porter products to asbestos litigation in the Navy and shipyard context.

Asbestos Cloth — Personal Testimony

“…Do you recall whose asbestos cloth [it was]…” — deposition testimony asking a Navy veteran or shipyard worker to identify the manufacturer of asbestos cloth they worked with appears in the corpus, in a context that includes H.K. Porter products. Workers who cut, fitted, wrapped, or removed asbestos cloth from pipe and equipment surfaces were exposed to asbestos fiber release during each of those operations.

“…asbestos cloth stuffed with fiberglass…” — documentation describing a transition in asbestos cloth products — from pure asbestos cloth to asbestos cloth stuffed with fiberglass as a partial replacement — appears in the corpus. This transition-era product documentation establishes the time period during which manufacturers were beginning to modify asbestos textile products while still incorporating asbestos fiber.

Federal Specification SS-C-00466 — Navy Ships

“Federal Specification SS-C-00466b (Nav[y-ships]). Write for…” — the Federal Specification governing asbestos cloth and cord products for Navy ships (SS-C-00466 and its successor revisions b, d, e) appears in the corpus in connection with H.K. Porter and the Navy asbestos textile supply record. The Federal Specification — which established the tensile strength, fiber content, and performance requirements for asbestos cloth used on Navy ships — was the procurement standard to which manufacturers like H.K. Porter and Amatex produced their products. Multiple revisions of the specification (SS-C-00466b, SS-C-00466d, SS-C-00466e) appear in the corpus, spanning the decades during which asbestos cloth was procured for naval use.

“…IOP140 tensile equals Navy style n with 47[% asbestos content]…” — technical documentation comparing specific asbestos cloth product tensile characteristics against the Navy’s standard specifications appears in the corpus. This specification-comparison documentation reflects the competitive bidding and qualification process under which asbestos cloth manufacturers, including H.K. Porter, produced products specifically for Navy ship requirements.

Amatex — Named Asbestos Textile Defendant

“…Amatex, AMERICAN ASBESTOS, AMERICAN ASBEST[OS]…” — Amatex Corporation is named in the publicly filed asbestos litigation corpus alongside American Asbestos Company and related asbestos textile defendants. The grouping of Amatex with American Asbestos and similar defendants reflects the formal defendant categorization in asbestos textile litigation — where manufacturers of woven asbestos cloth, braided packing, and asbestos cord were grouped as asbestos textile defendants in multi-defendant asbestos dockets.

Asbestos Textile Institute — Industry Context

“…Asbestos Textile Institute…” — documentation of the Asbestos Textile Institute appears in the corpus in the H.K. Porter and Navy asbestos cloth context. The Asbestos Textile Institute was the trade association representing asbestos cloth, packing, and textile manufacturers — including H.K. Porter Company — in the United States. The Asbestos Textile Institute conducted and suppressed research on asbestos disease risks among asbestos textile workers, and its member companies’ products were documented in Navy procurement records.

“…A Study of Asbestos in Asbestos Textile [Industry]…” and “…asbestosis in the Asbestos Textile Industry…” — formal research studies on asbestos disease in the asbestos textile manufacturing industry appear in the corpus, establishing the documented health record of asbestos fiber exposure from asbestos cloth production — the same fiber types and exposure mechanisms affecting Navy personnel who handled finished asbestos cloth products.

Exposure Pathways for Asbestos Cloth Products

Pipe wrapping: Navy enginemen, boiler technicians, and shipyard pipefitters wrapped hot piping with asbestos cloth, cutting sections to fit and securing them with asbestos tape or wire. Cutting and handling asbestos cloth released chrysotile fibers into the breathing zone.

Surface insulation: Asbestos cloth was applied as a fire-resistant outer covering over block insulation on boilers, turbines, and other high-temperature equipment. Fitting and stapling cloth to irregular equipment surfaces generated fiber release.

Removal and overhaul: Hardened or deteriorated asbestos cloth removed from piping and equipment during overhaul operations released concentrated asbestos fiber into confined engineering spaces.

Navy veterans who worked with or around H.K. Porter or Amatex asbestos cloth products aboard Navy vessels or at naval shipyards, and who subsequently developed mesothelioma, asbestos-related lung cancer, asbestosis, or pleural disease, may qualify for:

  • VA presumptive service connection under 38 CFR § 3.309(d) for veterans with engineering or insulation-related duties involving asbestos cloth products
  • Civil claims against H.K. Porter and Amatex successors based on documented failure to warn about asbestos fiber release from cloth and textile products manufactured to Navy specifications

Key documents:

  • DD-214 or service records — documenting engineering ratings or shipyard duty involving pipe insulation and asbestos cloth work
  • Employment records — shipyard employment records documenting insulation or pipe covering work
  • Diagnosis — mesothelioma, asbestos-related lung cancer, asbestosis, or pleural disease

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Exposure documentation derived from publicly filed asbestos litigation records including Navy veterans’ personal testimony identifying H.K. Porter asbestos cloth products, formal corporate correspondence to H.K. Porter about asbestos products, Federal Specification SS-C-00466 (Navy ships) documentation for asbestos cloth, Amatex Corporation’s identification as an asbestos textile defendant, and Asbestos Textile Institute industry documentation. This does not constitute legal or medical advice.