MasterSil 151 MED

MasterSil 151 MED is a medical-grade potting and encapsulation silicone that is formulated to withstand vibration, impact, shock and thermal cycling. This two-component material cures at room temperature (more quickly at elevated temperatures), with cure shrinkage less than 0.1%, a Shore A hardness of 45, and an elongation-at-break of 160%. It cures optically clear with a refractive index of 1.43, making it well-suited as a protective coating in optical and fiber-optic applications. Its low viscosity of 1,500 cP makes it suitable for applications with complicated contours in complex configurations. It is an excellent electrical insulator with a volume resistivity of 1E15 ohm-cm and can withstand temperatures from –65°F to +400°F. Its tensile strength is 880 psi at 73°F and its mix ratio is 10:1 by weight. It meets U.S. Pharmacopeia (USP) Class VI requirements for medical applications.