Medical Grade Silicone Designed to Withstand Vibration, Shock, Impact and Thermal Cycling

Flexibility is of vital importance in the design of medical devices subjected to vibration, impact, shock and thermal cycling. Two component, room temperature curing Master Bond MasterSil 151 Med is a medical grade, potting and encapsulation silicone formulated to withstand such exposures.

With a low viscosity of 1,500 cps, it is ideal for use in applications with complicated contours in very complex configurations. It is an excellent electrical insulator with a volume resistivity of 1x1015 ohm cm and can handle service over the wide temperature range of -65°F to +400°F.

MasterSil 151 Med cures optically clear with a refractive index of 1.43, making it well suited for use as a protective coating in optical and fiber optic applications. Cures can be accomplished at room temperature, or faster at elevated temperatures. Shrinkage upon cure is less than 0.1%. When cured, MasterSil 151 Med has a Shore A hardness of 45 and an elongation at break of 160%. Even though it has such high elasticity, its tensile strength is still a favorable 880 psi at 73°F. Mix ratio is 10 to 1 by weight. MasterSil 151 Med fully meets USP Class VI requirements for medical applications.

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