Both addition (platinum catalyzed) and condensation (tin catalyzed) cured two part silicones are available in different sized units and can be automatically dispensed with meter mix equipment. Where cure inhibition is an issue, condensation cured silicones can be utilized.
Special Properties of Two Component Silicones
Two component silicones exhibit strong adhesion to glass, plastics, metals, rubbers and other substrates. Specific grades offer:
- Resistance to humidity and extreme temperatures
- Superior flexibility
- Electrical insulation
- Thermal conductivity
- Electrical conductivity
Certifications for MasterSil® Two Component Silicone Compounds
Many of Master Bond MasterSil® two part silicones are approved for use in various specialty applications and industries. Additionally, they meet the following certifications:
- USP Class VI for biocompatibility
- ISO 10993-5 for cytoxicity
Learn more about our medical grade silicones
Applications for Master Bond Two Part Silicone Adhesives
Master Bond two part silicone adhesives provide high performance and cost effective solutions for a wide range of application requirements. Some of the most common include:
- Heat sink attachment
- Board coating
- Potting modules
- Lid and housing seals
- LED assembly
- Bonding and sealing appliances
- Component attachment
Some Popular MasterSil® Two Part Silicone Products
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MasterSil 152 Low viscosity, optically clear condensation curing system. Superb flexibility and electrical insulation properties. Long pot life. Will cure in section >1 inch. Low exotherm. Elongation 150-180%. Serviceable from -65°F to +400°F. |
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MasterSil 151Med Medical grade, USP Class VI approved silicone. Addition type cure system. Optically clear. Low outgassing. Offers ambient or elevated temperature cures. Excellent for potting and encapsulation applications. Low shrinkage upon cure. Resists gamma radiation, EtO and various chemical sterilants. Serviceable from -65°F to +400°F. |
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MasterSil 153 Two part silicone paste for bonding and sealing applications. Outstanding flexibility. Low exotherm and long pot life system. Self priming feature. Contains no solvents or diluents. Superior electrical insulation properties. Can cure in wide sections vertically and horizontally. Serviceable from -65°F to +400°F |
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MasterSil 151AO Thermally conductive silicone casting, potting and sealing system. Thermal conductivity of 0.35-.0.54 W/(m•K). Electrically isolating. Low viscosity system bonds well to a wide variety of substrates. Remarkable flexibility. Temperature resistant from -65°F to +400°F. White color. |
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MasterSil 153AO Thermally conductive silicone casting, potting and sealing system. Thermal conductivity of 0.35-.0.54 W/(m•K). Electrically isolating. Low viscosity system bonds well to a wide variety of substrates. Remarkable flexibility. Temperature resistant from -65°F to +400°F. White color. |
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MasterSil 323 Two part silicone paste for bonding, sealing and encapsulating applications. Optically clear in thin sections. Outstanding flexibility. Contains no solvents or diluents. Low to moderate viscosity. Low dielectric constant. Addition cured, no by-products released during cure. Serviceable from -65°F to +400°F. |
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MasterSil 323AO-LO Thermally conductive silicone casting, potting and sealing system. Flowable, meets NASA low outgassing specifications. Electrically isolating. Low viscosity system bonds well to a wide variety of substrates. Flexible. Temperature resistant from -65°F to +400°F. White color. |
