Call (626) 333-7884 for Pricing

  • Tubes can be made in any size you require.  Mandrel charges are rare, usually for extremely large or unusual sizes
  • No line item minimums
  • One to three day delivery available with nominal expedite charge.
Dielectric Kraft Material Properties
 Dielectric Kraft Tubing
Made from high quality electrical grade neutral Kraft specifically manufactured for transformer insulation.  Neutral in color and produced to meet precise specifications, Kraft is the lowest cost of all electrical insulations available for spiral wound tubing.  Moisture absorption is minimal, but inherent.  Recommended when insulation is required meeting specified parameters listed.  Transformers, stator insulators and coil forms are suggested uses for this material.
Dielectric Strength – vpm min. 165
AIEE Temperature Class °C 90





Phenolic Impregnated
 Phenolic Impregnated Kraft Tubing
Commonly referred to as “Phenolic”, this high quality electrical grade neutral Kraft is impregnated with class “b” stage phenolic resin.  After winding, the tube is heated
to 300° F to complete the cure cycle.  The result is an extremely strong and high dielectric tube with reduced moisture absorption. Excellent for numerous fabrication purposes.  Recommended when Kraft alone does not provide the strength required in identical wall thicknesses.  Can be combined with plain Kraft for reduced cost.
Dielectric Strength – vpm min. 165
AIEE Temperature Class °C 90 to 105





Vulcanized Fibre
  Vulcanized Fibre Tubing
Commonly known as “Fish Paper”, This
material is produced from cotton rag base paper.  Blue/grey in appearance, tubing manufactured with vulcanized Fibre is extremely strong and rigid.  Recommended for heavy gauge wire or transformer
cores requiring high abrasive resistance.  Material cost is approximately 5 times that of Kraft.  Nominal moisture absorption.
Dielectric Strength – vpm min. 165
AIEE Temperature Class °C 90 to 105








Nomex® is a high temperature and high dielectric strength polyamide paper known for its exceptional physical and electrical properties.  It can retain at least 50% of critical original properties after 10 years of continuous heating at 200° C (428°F).  Inherently flame retardant, most grades will meet UL standard 94 V-O.  Most commonly used in motors and high voltage transformers, hydrogen cooled generators and liquid gas pumps.
Dielectric Strength – vpm min.(dependant on thickness) 500 to 1000
Temperature -(properties vary little up to) 250°C





Ce-Quin® I, II, V
 Quin® I & II are white. Ce-Quin® V is a brown


An unfired aluminum silicate ceramic-like paper composed of particulates and fibrous materials, bonded with acrylonitrite latex. Ce-Quin® I & II are white. Ce-Quin® V is a brown, stiff version which has been thermally treated. Ce-Quin® V meet UL standard 94 V-O and is a lower cost material comparable to Nomex® in temperature rating.  Can be combined with other materials. Common uses are dry type transformers, ground insulation, phase insulation, core wrap, and traction motors.
Dielectric Strength – vpm min. Ce-Quin® I 200
Ce-Quin® II 250
Ce-Quin® V 180
AIEE Temperature Class °C 220







Temperature (Class B Epoxy) 130°C
Temperature (Class H Epoxy) 180°C
Temperature (P-Glass) 250°C





Combined Materials
 Kraft Combined Materials Tubing


Materials canbe combined to reduce cost or enhance the performance of one product or
another.  Examples of combined materials are:
Kraft/Fish Liner: Kraft tubing lined with a layer of fish.  Lower cost than all fish, but the strength of fish for abrasion resistance in the lamination process.
Kraft/Nomex®: Kraft with Nomex® over wrap, or Nomex® buried between layers of Kraft.
Kraft/Phenolic: For greater tube strength than plain Kraft
Kraft/Ce-Quin®: Kraft with Ce-Quin® buried between layers of Kraft
Kraft/Mylar: font-size: 12 px; “Kraft with Mylar over wrap, or Mylar buried between layers of Kraft.  High dielectric properties.
Other combinations of material are available.  Call the factory for more information.
Other Materials
 Other Materials Tubing


Tubes can be made using almost any material which can be slit into tape form. Examples are polyimide, polyamide, mica, dacron, foil.