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Master Bond adhesives

Master Bond MasterSil 708FR One Part, Flame Resistant Silicone
Categories: Polymer; Thermoset; Silicone

Material Notes: Description: MasterSil 708FR is a one component, high performance RTV silicone that is mainly used for its flame retardancy. It is UL listed with a flame classification for 94V.1 for thicknesses of 0.75 mm and 94V.0 for a 3 mm thickness. It adheres well to a wide variety of substrates including glass, metals and many plastics. The rapidity of the cure depends on the thickness of the layer and the humidity; the thicker the layer the slower the cure. It is exceptionally soft with good elasticity and flexibility, and outstanding electrical insulation properties. Most importantly, it is non-corrosive, fast setting, and has a flowable consistency. MasterSil 708FR is serviceable over the broad temperature range of -45°C to +200°C, as per UL specifications, and is gray in color.

Information provided by MasterBond®

Vendors: Master Bond is a leading manufacturer of adhesives, sealants, coatings and potting compounds. Master Bond’s vast product line consists of over 3,000 epoxy, polyurethane, silicone, cyanoacrylate and latex adhesives that vary in viscosity, cure speed, strength, chemical resistance, electrical properties, etc. Our custom adhesives offer design flexibility and provide excellent bonding performance. Visit www.masterbond.com.

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Physical PropertiesMetricEnglishComments
Specific Gravity 1.20 g/cc1.20 g/cc
Viscosity 25000 - 45000 cP25000 - 45000 cP
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore A 30 - 4030 - 40
Tensile Strength at Break 2.07 - 2.76 MPa300 - 400 psi
Elongation at Break 200 - 300 %200 - 300 %
Shear Strength 1.03 - 1.38 MPa150 - 200 psiTensile, Al to Al
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity 3.00e+14 ohm-cm3.00e+14 ohm-cm
Dielectric Constant 3.2
@Frequency 60 Hz,
Temperature 25.0 °C
3.2
@Frequency 60 Hz,
Temperature 77.0 °F
Dielectric Strength 23.6 kV/mm
@Thickness 3.17 mm
600 kV/in
@Thickness 0.125 in
Dissipation Factor 0.010
@Frequency 60 Hz,
Temperature 25.0 °C
0.010
@Frequency 60 Hz,
Temperature 77.0 °F
 
Thermal PropertiesMetricEnglishComments
Maximum Service Temperature, Air 200 °C392 °F
Minimum Service Temperature, Air -45.0 °C-49.0 °F
Flammability, UL94  V-1
@Thickness 0.750 mm
V-1
@Thickness 0.0295 in
 V-1
@Thickness 1.50 mm
V-1
@Thickness 0.0591 in
 V-0
@Thickness 3.00 mm
V-0
@Thickness 0.118 in
 
Processing PropertiesMetricEnglishComments
Tack-Free Time 10.0 - 15.0 min0.167 - 0.250 hour
Shelf Life 6.00 Month
@Temperature 23.9 °C
6.00 Month
@Temperature 75.0 °F
in original unopened containers
 
Descriptive Properties
Appearancegray

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