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TUFNOL Rolled Laminated Glass Fabric Tubes 

Epoxy Glass Fabric laminate

Glass fibre/epoxide resin laminated plastic tubes

(SRBGF - Synthetic Resin Bonded Glass Fabric)

 

Strong, rigid laminated tubes

TUFNOL Rolled Laminated epoxy glass fabric tubes have good mechanical strength, low water absorption and are resistant to weathering and to chemical attack by mild acids and alkalis. They are strong and rigid, with good bursting strength and excellent electrical insulation properties.

Three grades are available:

  • - Grade RL G/1 is a strong, rigid material, with good moisture resistance and excellent electrical insulation properties.  It has good dimensional stability and is resistant to a wide range of working environments.  It may be used in Class B (130ºC) electrical applications.
  • - Grade RL G/2 is similar to Grade RL G/1 and meets additional standards for flammability properties.  It is a strong, rigid material, with good moisture resistance and excellent electrical properties.  It has good dimensional stability and is resistant to a wide range of working environments.  It is used in Class B (130ºC) electrical applications.
  • - Grade RL G/3 is made with an epoxy resin which is specially formulated to give improved performance at raised temperatures.  It is a strong, rigid material, with good moisture resistance and excellent electrical properties.  It has good dimensional stability and is resistant to a wide range of working environments.  It is used in Class F (155ºC) applications.

What are TUFNOL RL Epoxy Glass Fabric tubes used for?

These materials are used for many applications where strong, rigid tubes are required for the manufacture of cylindrical components for mechanical or electrical insulation uses.

 

     - RL G/1 is the main general purpose grade and the other two grades may be selected where their particular additional properties are required.  Grade RL G/1 is used for a wide variety of applications where a strong, high performance insulating tube material is required.  Typical uses include mechanical components or electrical insulation for machines operating at slightly raised temperatures and in electronic equipment or for insulation where high strength and very long life is required.

 

     - RL G/2 is normally selected where the sme type of tube is required, but with additional fire properties.  Typical applications include electrical insulation for machines operating at slightly raised temperatures and in electronic equipment.

 

     - RL G/3 is normally selected where a similar material is required but with the extra temperature capability of a Class F material.  Typical applications include electrical insulation for machines operating at raised temperatures and in a wide range of electronic equipment.


TYPES AVAILABLE

 

Tubes

 

Grade RL G/1     – natural colour

Yes

Grade RL G/2     – natural colour

Yes

Grade RL G/3     – natural colour

Yes

Minimum order quantities may apply.


Click here for TUFNOL RL Epoxy Glass Fabric Tubes STANDARD SIZES



SPECIFICATIONS for TUFNOL RL Cotton Fabric Tubes


BRITISH STANDARDS

Current Standards

Recent Standards (now obsolete)

Grade RL G/1 tube

 

BS EN 61212-3-1 Type EP GC 21

BS 6128 Part 8 Type EP GC 81

Grade RL G/2 tube

BS EN 61212-3-1 Type EP GC 21 plus added flammability properties

 

BS 6128 Part 8 Type EP GC 81 (plus added flammability properties)

Grade RL G/3 tube

BS EN 61212-3-1 Type EP GC 22

 

BS 6128 Part 8 Type EP GC 81


PHYSICAL PROPERTIES


TUFNOL RL Epoxy Glass Fabric Tubes

 

PROPERTY

Grade

RL G/1

TYPICAL RESULT

Grade

RL G/2

TYPICAL RESULT*

Grade

RL G/3

TYPICAL RESULT*

UNITS

Axial compressive strength

200

220

220

MPa

Cohesion between layers

500

500

500

MPa

Water absorption

0.22

0.30

0.30

mg/cm2

Insulation resistance after immersion in water

1 x1010

1x1010

1x1011

ohms

Loss tangent at 1 MHz

0.017

0.016

0.016

-

Permittivity at 1MHz

4.6

4.7

4.7

-

Axial electric strength in oil at 90ºC

70

-

-

kV

Electric strength normal to axis

  in oil at 90ºC

 

 

 

 

- 1.6mm wall

12

-

-

MV/m

- 3.0mm wall

9

-

-

MV/m

Flammability category

-

FV0

 

-

Relative density

1.80

1.80

1.80

-

Maximum working temperature**

 

 

 

 

- continuous

120

120

140

ºC

- intermittent

130

130

155

ºC

Thermal classification

Class E

Class E

Class F

-

Test methods as BS EN 61212-2, where applicable.

*Note:  Data on this grade is provisional and is based on a small number of tests.

 

**Users of highly stressed components at temperatures approaching the maximum are recommended to seek further advice from Tufnol Composites Ltd.