Delivering Quality Plastics & Fabricated Parts Since 1948 Call: 800.367.3773 (800 - FOR - ESPE)
Fishpaper is the generic name for the Electrical Insulation grade of Vulcanized Fibre. Fishpaper 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. Fishpaper has excellent punchability and physical strength, for applications like end laminations for electric motors. It is available in sheets, rolls, or slit to coils of any width. Services also include: die-cutting, forming, slitting, punching.

Fishpaper Applications include:
  • Electrical Appliances
  • Gaskets
  • Electrical Instruments
  • Fuse Tubes
  • Washers
  • Circuit breakers
  • Automotive
  • Railroad track insulation
  • Electrical Insulation
  • Bushings for motor contacts
  • Electrical Devices
  • Lightening arresters

    * $15.00 small order charge applies to line items less than 200#'s

Unit of Measure


N/A 0.015 in

Thickness Range

N/A 0.013 to 0.017 in


N/A Roll


N/A Blue


N/A 26"

Weight per 1M Ft.

N/A 232.106 lbs

Price/Pound 13-49 lbs.*

N/A $7.90

Price/Pound 50-99 lbs.*

N/A $7.11

Price/Pound 100-199 lbs.*

N/A $6.32

Price/Pound 200-499 lbs.

N/A $5.53

Price/Pound 500-999 lbs.

N/A $5.14

Price/Pound 1000+ lbs.

N/A $4.74

Flammability, UL94

N/A 94HB


N/A 1.20 gm/cc

Specific Volume

N/A 23.0 in³/lb

Tensile Strength (MD)

N/A 21000 psi

Tensile Strength (CD)

N/A 10000 psi

Modulus of Elasticity in Flexural x 10^5 (MD)

N/A 10

Modulus of Elasticity in Flexural x 10^5 (CD)

N/A 7

Modulus of Elasticity in Tension x 10^5 (MD)

N/A 12

Modulus of Elasticity in Tension x 10^5 (CD)

N/A 8

Flexural Strength (MD)

N/A 29000 psi

Flexural Strength (CD)

N/A 16000 psi

Compressive Strength

N/A 35000 psi

Impact Strength (MD)

N/A 2.5 ft.lbs/in

Impact Strength (CD)

N/A 2.0 ft.lbs/in

Rockwell Hardness (R Scale)

N/A 70 divisions

Bond Strength

N/A 900 psi

Bursting Strength

N/A 325 psi

Tear Strength (MD)

N/A 550 gm

Tear Strength (CD)

N/A 700 gm

Dielectric Strength

N/A 400 Volts/mil

Dielectric Strength

N/A 215 Volts/mil

Dielectric Strength

N/A 200 Volts/mil

Arc Resistance

N/A 125 sec

Comparative Tracking Index

N/A 400 - 599 V

Thermal Conductivity at 149ºF

N/A 0.168 Btu/hr/ft²/ºF/ft

Specific Heat

N/A 0.403 Btu/lb/ºF

Thermal Expansion x10^5 (MD)

N/A 1.1 in/in/ºF

Thermal Expansion x10^5 (CD)

N/A 1.7 in/in/ºF

Dimensional Change (Thickness)

N/A 1.00 %

Dimensional Change (Per Percent Change MD)

N/A 0.10 %

Dimensional Change (In Moisture Content CD)

N/A 0.25

Water Absorption, 24hrs

N/A 63 %

Coefficient of Friction (Fibre on Fibre)

N/A 0.16

Coefficient of Friction (Fibre on Smooth Cast Iron)

N/A 0.21


N/A 0.5 in/min


N/A Blue


N/A 115 ºC


N/A 110 ºC

Hot-Wire Ignition

N/A 15-29 sec

Hot-Wire Ignition

N/A 60-119 sec

High-Ampere Arc Ignition

N/A 120 sec

N/A Armature slot insulation, liners, washers, coil insulation, arc shields, formed specialties and gasket stock.