Uncoated Varflex Electrical Insulating Sleevings

Spec Sheet Download

Varglas Non-Fray Sleeving

Varglas Non-Fray Sleeving is flexible, high-temperature secondary insulation made from closely braided, continuous filament fiberglass which has been heat-cleaned to remove impurities in the yarn and to retard fraying. There are four types available all of which are noncorrosive and nonflammable and not attacked by fungus.

Type H: Heat cleaned only. Since it is not treated with sizing or pigments after heat cleaning, it is available only in the natural (silver) color.

Type HO: Heat cleaned and treated with an acrylic resin binder (natural or pigmented).

Type HP: Heat cleaned and treated with an acrylic resin binder (natural or pigmented) that is slightly more flexible than Type HO.

Type HM: Heat cleaned and treated with an oleoresinous varnish binder (natural or pigmented).

Binders are applied to further retard fraying and to hold sleeving round for cutting. Types HO, HP and HM are available in a variety of colors which may be less vivid after exposure to 150°C. All four types are available in various wall thicknesses. All will serve as secondary insulation unaffected indefinitely through a temperature range from -60°C to 316°C and withstand up to 616°C for shorter periods. Since there is no impregnant that will provide dielectric protection at those extremes, these sleevings require heavy or multiple-wall thicknesses if used as primary insulation.

Specifications

Varglas Non-Fray Sleevings conform to NEMA TF-2 and are made from glass fibers conforming to Military Specification MIL-Y-1140 (latest revision), Class C, Form 1 (continuous filament yarns).Under the Component Program of Underwriters Laboratories, all Varglas Non-Fray Sleevings comply with VW-1 flammability requirements under UL File #E53690. They are incorporated in systems work, per UL Safety Standard 1446, to facilitate product acceptance by UL.

Applications

Varglas Non-Fray Sleevings are used for thermal and mechanical protection in consumer, commercial and industrial applications where flexibility, abrasion resistance or additional secondary insulation is required and particularly when temperature extremes prohibit the use of other materials. These would include such applications as heating appliances, electric motors, resistors, lighting fixture transformers and ballasts, etc.

Non-Fray’s greater flexibility and expandability find extensive use in wire harness assemblies where its ease of installation over irregular shapes and wire bundles provides definite assembly advantages.

In 1/32” Wall, Non-Fray is used as primary insulation in low-voltage applications such as coffeemakers, hand irons, toasters, hot plates, range units and other appliances.

Sizes

AWG #24 through 1” l.D. Other sizes subject to inquiry.

Standard Color

Natural - All 4 types. Other colors in Types HO, HP and HM made to order. Not available in white.

Standard Packaging

Coils - All 4 types. Spools where specified. Cut pieces are available, subject to cutting charges, in Types HO, HP and HM only.

Varglas Non-Fray Properties

  Property   Performance
Physical
  Specific Gravity, g/cu. cm.   2.55 – 2.58
  Elongation at Break, percent   4.5 – 4.9
  Tensile Strength, psi @ 22°C   500,000 - 550,000
  Water Absorbency @ 22°C, 65% R.H.   None
Chemical
  Resistance to Acids and Alkalies   Good resistance to most alkalies. Resistance to acids is fair.
  Effect of Bleaches and Solvents   Unaffected
  Resistance to Mildew, Aging and Sunlight   Excellent resistance to sunlight and aging. Not attacked by mildew.
Electrical
  Dielectric Strength   Provides only space factor electrical insulation of approximately 1100 volts for standard wall and 1500 volts for 1/32" wall.
  Volume Resistivity @ 22°C and 500 volts dc, ohm-cm   1015 – 1016
  Dielectric Constant @ 22°C, 60 Hz   6.5 – 6.8
  Dissipation Factor @ 22°C, 1 MHz   0.001 - 0.005
Thermal
  Thermal Endurance   Up to 316°C indefinitely; up to 616°C for shorter periods.
  Cold Bend   -60°C per UL 1441
  Flame Resistance   Passes UL 1441 (VW-1). Will not burn.
Note:
 

Average properties of bulk E Glass, as reported in Owens-Corning Publication No. 5-TEX-18027. considered to be applicable to bare glass filaments.
Information contained here is precise and reliable. However, being unique, each end-use should be evaluated to satisfy its specific requirements.

Standard Sizes

Sleeving sizes in the following table are based on the size of round conductors that will fit snugly into the product without distortion of the sleeving.

Wire Size Inside DIameter Wall Thickness (minimum)
 
(AWD)
  Maximum
Inches
Nominal
inches
Minimum
Inches
MM Size
(to .5mm)
MM - Dec.
Equivalent
  Grade A
Inches
Grade B
Inches
Grade C
Inches
No. 24   0.027 0.022 0.020 .5 0.01969   0.011 0.007 0.006
No. 22   0.032 0.027 0.025       0.013 0.007 0.006
No. 20   0.039 0.034 0.032       0.013 0.007 0.006
No. 19   0.044 0.038 0.036 1.0 0.03937   0.013 0.007 0.006
No. 18   0.049 0.042 0.040       0.015 0.007 0.006
No. 17   0.055 0.047 0.045       0.015 0.007 0.006
No. 16   0.061 0.053 0.051       0.015 0.007 0.006
No. 15   0.066 0.059 0.057 1.5 0.05906   0.015 0.007 0.006
No. 14   0.072 0.066 0.064       0.015 0.007 0.006
No. 13   0.080 0.076 0.072 2.0 0.07874   0.015 0.007 0.006
No. 12   0.089 0.085 0.081       0.015 0.007 0.006
No. 11   0.101 0.095 0.091 2.5 0.09842   0.018 0.009 0.008
No. 10   0.112 0.106 0.102       0.018 0.009 0.008
No. 9   0.124 0.118 0.114 3.0 0.11811   0.018 0.009 0.008
No. 8   0.141 0.133 0.129 3.5 0.13780   0.018 0.009 0.008
No. 7   0.158 0.148 0.144 4.0 0.15748   0.018 0.009 0.008
No. 6   0.178 0.166 0.162 4.5 0.17716   0.020 0.011 0.010
No. 5   0.198 0.186 0.182 5.0 0.19685   0.020 0.011 0.010
No. 4   0.224 0.208 0.204 5.5 0.21654   0.020 0.011 0.010
No. 3   0.249 0.234 0.229 6.0 0.23622   0.020 0.011 0.010
No. 2   0.278 0.263 0.258 7.0 0.27559   0.020 0.011 0.010
No. 1   0.311 0.294 0.289 7.5 0.29528   0.020 0.011 0.010
5/16"   0.334 0.313 0.313 8.0 0.31496   0.020 0.011 0.010
No. 0   0.347 0.330 0.325 8.5 0.33464   0.025 0.011 0.016
3/8"   0.399 0.375 0.375 10.0 0.39370   0.025 0.017 0.016
7/16"   0.462 0.438 0.438 11.5 0.45276   0.025 0.017 0.016
1/2"   0.524 0.500 0.500 13.0 0.51181   0.025 0.017 0.016
5/8"   0.655 0.625 0.625 16.5 0.64960   0.025 0.017 0.016
3/4"   0.786 0.750 0.750 19.5 0.76772   0.025 0.017 0.016
7/8"   0.911 0.875 0.875 22.5 0.88582   0.025 0.017 0.016
1"   1.036 1.000 1.000 25.5 1.00470   0.025 0.017 0.016
Over 1" Upon Request
Government Specification
and Designation
Varflex Product Test or Qualification Reference Status
MIL-I-3190/2, Class 130°C, Type B,
Category b, All Colors, All Sizes, Grade A
Varflo, B-A-1 N.Y. 6139-1 On QPL for
MIL-I-3190/2
MIL-I-3190/3, Class 155°C, Type A,
Category a, All Colors, All Sizes, Grade A
Varglas Acrylic 343
and 397, F-A-1
Varflex Report No.4203
and Supplement
On QPL for
MIL-I-3190/3
MIL-I-3190/5, Class 200°C, Type C,
Category c, All Colors, All Sizes, Grade A
Varglas Silicone
Resin 500, H-A-1
Varflex Report No.4202
and Supplement
On QPL for
MIL-I-3190/5
MIL-I-3190/6, Class 200°C, Type D,
Category c, All Colors, All Sizes, Grade A
Varglas Silicone
Rubber, H-A-1
Varfiex Report No.4200
and Supplement
On QPL for
MIL-I-3190/6
MIL-I-3190/7, Class 220°C, Type E,
Category c, All Colors, All Sizes, Grade A
Varglas Viton 231,
R-A-1
Varflex Report No.4204 On QPL for
MIL-I-3190/7
MIL-I-3 190/8, Class 220°C, Type D,
Category c, All Colors, All Sizes, Grade A
Varglas ES-4400
Silicone Rubber, R-A-1
Varflex Report No.4201
and Supplement
On QPL for
MIL-I-3190/8
MIL-I-3190/9, Class 240°C, Type D,
Category c, All Colors, All Sizes, Grade A
Varglas 240 Silicone Rubber,S-A-1 Varflex Report No.4205,
Parts I and II
On QPL for
MIL-I-3190/9
MIL-I-631D, Type F, Form U, Grade c*,
Classes I & II, Category 1 (*high temperature)
Vartube SHH-3A and
SHH-6A
U.S. Testing Co.
Report No.51150
On QPL for
MIL-I-631D
MIL-I-631D, Type F, Form U, Grades a & b*,
Classes I & II, Category 1 (*general purpose)
Vartube 120/210 N.Y. 5203-90 On QPL for
MIL-I-631D
 

Definitions

Coated sleeving is a flexible, tubular product braided from cotton, rayon, nylon, glass or other fibers, which is impregnated, coated, or impregnated and coated with an electrical insulating material.


 Nema Grades

A-1

7000* volt average —
5000 volt minimum individual

B-1

4000 volt average —
2500 volt minimum individual

C-1

2500 volt average —
1500 volt minimum individual

C-2

1500 volt average —
800 volt minimum individual

C-3

No dielectric
guarantee
*For sleeving Types 3, 4, and 5, values are 8000 volt average, 6000 volt minimum individual.

For more information, refer to NEMA Standards for Coated Electric Sleeving. Also, ASTM D372.

 

Types & Classes

Coated sleeving is categorized by the type of coating, base fabric material, dielectric breakdown voltage, temperature index, and inside diameter as follows:

Type 2

A flexible treated sleeving made from inorganic-base yarns such as fibrous glass and impregnated or coated with an insulating material which can be shown by applicable experience or accepted test to have at temperature index of 130 (continuous use at 130°C)

Type 3

A flexible treated sleeving made from inorganic-base yarns such as fibrous glass and impregnated or coated with an insulating material, such as polyvinyl chloride, which can be shown by applicable experience or accepted test to have a temperature index of 105 (continuous use at 105°C).

Type 4

A flexible treated sleeving made from inorganic-base yarns such as fibrous glass and impregnated or coated with an insulating material, such as silicone resin or polytetrafluoroethylene, which can be shown by applicable experience or accepted test to have a temperature index of 200 (continuous use at 200°C).

Type 5

A flexible treated sleeving made from inorganic-base yarns such as fibrous glass and impregnated or coated with an insulating material, such as silicone elastomer, which can be shown by experience or accepted test to have a temperature index of 200 (continuous use at 200°C).

Type 6

A flexible treated sleeving made from inorganic-base yarns such as fibrous glass and impregnated or coated with an insulating material, such as epoxies, polyesters, or acrylics, which can be shown by experience or accepted test to have a temperature index of 155 (continuous use at 155°C).


Sample Folders

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