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X-l (Excelsior)

Documents in our library describe X-l (Excelsior) as “washers and gaskets of asbestos, aluminum, brass, copper, cork, composition, felt, fibre, leather, impregnated leather, paper, plastics, rubber, steel, and fiberglass-supported plastic; packings-namely, o-rings, v-rings, u-rings, cups and molded packings of rubber, plastics, and homogeneous and clothsupports; hydraulic packings-namely, leather cups and v-and u-packings and flanges; and impregnated leather flanges, cups, u-packings and v-packings; and synthetic, homogeneous, and clothsupported rubber and plastic flanges, cups, u-packings, and v-packings”.1 They give it as sold from 1917.1,2,3 Where the documents differ, each is listed below with its source.

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Pictures

How X-l (Excelsior) looked: labels, photographs and catalog pages from our library. Each picture has its own page and library number, so it can be cited on its own.

What each document says

Every statement about X-l (Excelsior) 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 1917”, said by EXCELSIOR, INC., as recorded by U.S. Patent and Trademark Office1
  • Description: “WASHERS AND GASKETS OF ASBESTOS, ALUMINUM, BRASS, COPPER, CORK, COMPOSITION, FELT, FIBRE, LEATHER, IMPREGNATED LEATHER, PAPER, PLASTICS, RUBBER, STEEL, AND FIBERGLASS-SUPPORTED PLASTIC; PACKINGS-NAMELY, O-RINGS, V-RINGS, U-RINGS, CUPS AND MOLDED PACKINGS OF RUBBER, PLASTICS, AND HOMOGENEOUS AND CLOTHSUPPORTS; HYDRAULIC PACKINGS-NAMELY, LEATHER CUPS AND V-AND U-PACKINGS AND FLANGES; AND IMPREGNATED LEATHER FLANGES, CUPS, U-PACKINGS AND V-PACKINGS; AND SYNTHETIC, HOMOGENEOUS, AND CLOTHSUPPORTED RUBBER AND PLASTIC FLANGES, CUPS, U-PACKINGS, AND V-PACKINGS”, said by EXCELSIOR, INC., as recorded by U.S. Patent and Trademark Office1

Label: Excelsior X-L Brand (Excelsior Leather Washer Mfg. Co., Inc.), Image

  • Sold from: “Date of First Use in Commerce: December, 1970”, said by Excelsior, Inc., as recorded by U.S. Patent Office trademark file2

Catalog page: X-L Hydraulic Packings and Gaskets (Excelsior, Inc.), Image

  • Sold from: “Date of First Use in Commerce: December, 1970”, said by Excelsior, Inc., as recorded by U.S. Patent Office trademark file3
  • Asbestos content: “Asbestos”, p. 13

Kind of product

We list X-l (Excelsior) with paper, felt and millboard, cloth, tape and other textiles 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.

Paper, felt and millboard by other makers (299)

Min-k (Johns-Manville) · Pyrotex (Raybestos-Manhattan) · Insubestos (Unarco) · Limpet (Keasbey & Mattison) · Novabestos (Raybestos-Manhattan) · Vulca-Dek (Monroe) · Weldwood (U.S. Plywood-Champion Papers) · Wheeler (Wheeler Protective Apparel) · White Surface Asbestos Jacket (Johns-Manville) · White Top Asbestos Jacket (Philip Carey) · Woolfelt (GAF) · Wovenstone (Unarco) · Yankee (Beacon Sales Company) · "Not A Kick In A Million Feet" (Lehon) · #50 Asbestos Weatherproofing Felt (Johns-Manville) · 12# Asbestos Tape (Johns-Manville) · 15A Asbestos Jacket (Johns-Manville) · 411 (Nicolet) · 45A Asbestos Jacket (Johns-Manville) · 50 Weatherproofing (Johns-Manville) · and 279 more: all paper, felt and millboard

Cloth, tape and other textiles by other makers (301)

Min-k (Johns-Manville) · Pyrotex (Raybestos-Manhattan) · Thermobestos pipe covering · Novabestos (Raybestos-Manhattan) · Sal-mo (Nicolet) · Weldgard (H. K. Porter) · Weldgard (Southern Asbestos Co.) · Weldproff (Car-mon Products) · Weldwood (U.S. Plywood-Champion Papers) · Wheeler (Wheeler Protective Apparel) · X-250 Expansion A (Johns-Manville) · X-275 (Johns-Manville) · "Not A Kick In A Million Feet" (Lehon) · 101 Cloth (Coated) (Johns-Manville) · 135 Tadpole Gasketing Tape (Johns-Manville) · 135-S Tadpole Gasketing Tape (Johns-Manville) · 55 Cable Fireproofing Tape (Johns-Manville) · 64 Diagonal High Pressure Packing (A. W. Chesterton) · 810 (Unarco) · 848 (Unarco) · and 281 more: all cloth, tape and other textiles

References

  1. USPTO trademark case files (Trademark Full Text XML Data, Annual Applications, 2025 edition) (August 5, 1974). Not yet published in our library.
  2. Label: Excelsior X-L Brand (Excelsior Leather Washer Mfg. Co., Inc.), Image.
  3. Catalog page: X-L Hydraulic Packings and Gaskets (Excelsior, Inc.), Image.

Mentioned on this site

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“X-l (Excelsior).” AsbestosClaims.Law Library. https://asbestosclaims.law/library/products/excelsior-x-l.

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