Insulation Products are used to protect the metal parts of a battery from shorting out with other metal parts, as well as to prevent the metal parts from protruding through shrink tubing. This is commonly referred to as Washers or Cell Insulators. Most insulation products are commonly made up of Fishpaper but there are other product lines available.

Fishpaper is the name for the electrical grade of Vulcanized Fibre. Fish Paper has unique properties, including light weight, and ease of forming and punching. Fishpaper is also unique because it is more resistant to heat and cold than comparable plastic materials.

While many plastics become brittle or crack in cold temperatures, Fish Paper retains its strength and resilience. At high temperatures, many plastics lose strength or soften, while Fishpaper retains its strength to 115° C and beyond.

Fish Paper has excellent punchability and physical strength, for applications like end laminations for electric motors. Fishpaper is also excellent for use in oil-filled environments such as transformers.

Fishpaper has been the first choice of the electrical industry for over 100 years. It is available in sheets, rolls, or slit to coils of any width.

You may also know it as "Leatheroid". Some parts of Europe and Asia use the term Leatheroid instead of Fish Paper. Fish Paper was also sold under the tradenames Armite and Peerless.

Our Vulcanex® Vulcanized Fibre has an excellent electrical grade. It is high quality and UL-recognized, and rated 94-HB.