(-56°C to +200°C) (-69°F to +392°F)
Spec Sheet Download
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.
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.
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.
AWG #24 through 2” l.D. Other sizes subject to inquiry.
Natural. Other colors made to order.
Coils or spools at manufacturer’s option unless otherwise specified.
Varglas Silflex Properties
|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|
|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|
|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 Endurance||Up to 200°C indefinitely.|
|Brittleness Temperature||– 56°C per ASTM D746|
|Flame Resistance||Passes UL 1441 (VW-1). Will not burn.|
|Average properties of bulk S 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.
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)*|
|MM – Dec.
|Over 1″ Upon Request|
|*Minimum required wall thickness per NEMA standard TF-1|