PDF Data Sheet
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Varflex Products
Varflex Corporation
512 W. Court Street
Rome, NY USA 13440
Phone: 315-336-4400
Fax: 315-336-0005
EMail: sales
varflex.com
Description
Silflex Sleeving is flexible, secondary insulation made from closely braided, continuous filament fiberglass which, after heat cleaning to remove impurities such as starch, oils and binders, is impregnated with a high-temperature silicone resin.
Specifications
Silflex Sleeving conforms to NEMA TF-2 and is 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, Silflex Sleeving complies with VW-1 flammability requirements under UL File #E53690.
Applications
Silflex Sleeving is used in areas where flexibility as well as resistance to radiation, moisture, high temperature, and flame are essential. It offers space factor electrical insulation of approximately 650 volts with minimum outgassing, particularly after a pre-bake, and readily accepts potting compounds thereby enhancing electrical properties in systems work.
Sizes
AWG #24 through 2 ” l.D. Other sizes subject to inquiry.
Standard Color
Natural. Other colors made to order.
Standard Packaging
Coils or spools at manufacturer’s option unless otherwise specified.
| 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 | Excellent in weak solutions. Fair in concentrated solutions. | ||
| Resistance to Solvents | Fair | ||
| Resistance to the Elementst | Good Sunlight and weathering properties. | ||
| Compatibility | Improved compatibility with most potting compounds and varnishes. | ||
| Moisture Vapor Resistance | Excellence | ||
| Electrical | |||
| Dielectric Strength | Provides only space factor electrical insulation of approximately 650 volts. | ||
| 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 200°C indefinitely. | ||
| Brittleness Temperature | - 56°C per ASTM D746 | ||
| Passes UL 1441 (VW-1). Will not burn. | |||
| Note: | |||