| Varglas Non-Fray Sleeving |
Description
Varglas Non-Fray
Sleeving is flexible, high- temperature secondary insulation made from
closely braided, continuous filament Fiberglas® 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 revsion), 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
2” I.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.
Fiberglas® is a registered trademark of
Owens-Corning
Typical 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
Dielectic
Strength
Provides only space factor electrical insulation of
approximately 1100 volts for standard wall and 1500 volts for 1/32"
wall.
Volume
Resistivity @ 22C and 500 volts dc, ohm-cm
1015 –
1016
Dielectric
Constant @ 22C, 60 Hz
6.5 –
6.8
Dissipation
Factor @ 22C, 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.
Note: Information contained here is precise
and reliable. However, being unique. each end-use should be
evaluated to satisfy its specific
requirements.