Momentive RTV655 Clear Silicone Rubber Compound

This compound is clear and colorless but differs in low temperature flexibility. It is a low viscosity, easily pourable liquid with nominal viscosities ranging between 3000 and 7000 cps. RTV655 silicone rubber compounds have the capability of remaining flexible at temperatures -115°C (-175°F).

RTV655 silicone rubber compounds have been used for protection of electronic components and assemblies against shock, vibration, moisture, ozone, dust, chemicals, and other environmental hazards by potting or encapsulation of the components and assemblies. The optical clarity of this silicone rubber compound suggests evaluation for applications such as potting solar cells for maximum light transmission and electronic assemblies where component identification is necessary or desirable. RTV655 silicone rubber compound is preferred where flexibility at temperatures down to -115°C (-175°F) is required.

Features:

• Convenient 10:1 mixing ratio for use in automatic dispensing or hand operations
• Low viscosity allows easy flow in and around complex parts, providing excellent electrical insulation and shock resistance
• Cure rate can be accelerated by heat
• Will cure in deep sections or enclosed assemblies without exotherm and with low shrinkage
• Chemical composition contains no solvents for ease of use on production lines
• Reversion resistance and hydrolytic stability permit use in high humidity environments at elevated temperatures
• Clarity permits visual inspection for easy identification and repair of encapsulated parts
• Retention of elastomeric properties at temperatures up to 204°C (400°F)