PROTAVIC METASIL 5021 is a two component, general purpose RTV silicone material designed specifically for potting and encapsulating applications in the electrical industry.


Color White
Sp. Gravity 1.17
Viscosity, cps 11,000
Durometer, Shore A 45
Tear Strength, ppi 25
Tensile Strength, psi 450
Elongation % 170
Dielectric Strength, volts/mil 550
Dielectric Constant, 103 Hz 3.03
Dissipation Factor, 103 Hz 0.004
Volume Resistivity, ohm-cm 1.4 x 1013


PROTAVIC METASIL 5021 may be cured using either of two methods. Both methods require vacuum de-airing at 27 inches Mercury with room temperature cure for 24 hours.

Method 1 To 200 parts METASIL 5021 base add 1 part METASIL 5021 liquid activator. This gives good deep section cure with optimum physical properties.
Method 2 To 100 parts METASIL 5021 base add 10 parts METASIL 5021 green paste activator. This gives an easy means of determining catalyst dispersion as a fully dispersed green activator will impart a pale green tint to the system.

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Technical information and recommendations made by Protavic America, Inc. concerning products and uses or applications thereof, are based on reliable laboratory tests and are believed to be accurate. No warranty, however, is expressed or implied, nor is any warranty expressed or implied as to results to be obtained from use of said materials, whether used singly or in combination with other products. No statements made are to be construed as constituting a license under any existing patent.