http://www.professionalplastics.com/FISHPAPER
http://www.newark.com/gc-electronics/560/fibroid-fish-paper-electrical-insulation/dp/94F4073
GC ELECTRONICS - 560 - FIBROID FISH PAPER ELECTRICAL INSULATION
10"x24" $9.63
Q: Is this material UL Recognized; if so, what is the file number?
A: This part is UL listed and the UL file number is E55656.
http://www.gasketing.net/fish_paper.htm
Fish Paper Gasketing
We have no idea where Fish Paper originally got it's unique name. It
is not because it is used to wrap fish, put possibly because it looks
like the paper used to wrap fish.
Intended for electrical applications involving high dielectric
strength, plus good forming and bending qualities. Applications
include all types of armature slot insulations, arc shields, coil
insulations, insulation washers, and formed specialties.
Size: .010” x25” x40”
http://www.itwformex.com/Fish-Paper-Aramid-Paper-Alternative.html
Fish Paper & Aramid Paper Alternative
Fish paper and aramid paper are not always the best choices for
electrical insulation. Alternative materials have characteristics that
can reduce cost and improve design performance. Unlike fish paper,
which is made of cellulose, and aramid paper, which is made of aramid
fiber, Formex™ polypropylene electrical insulation is non-hygroscopic
(moisture absorption <0.06%). This means Formex retains its structural
integrity and dimensional stability even in the most demanding outdoor
applications unlike typical insulation paper.
Formex also has greater dielectric strength than fish paper and aramid
paper enabling thinner sheets of insulation material to be used in an
application thereby saving cost and weight.
Most importantly, Formex, is easily scored and folded into durable
three-dimensional parts providing the ability to replace molded and
sheet metal parts such as air-flow baffles, battery covers, and wire
harness organizers with a lightweight, low-cost, flame-retardant
material.