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Thermally Conductive, Electrically Insulative Two Part Silicone Meets NASA Low Outgassing Specifications

Master Bond MasterSil 972TC-LO passes the rigorous requirements for low outgassing per ASTM E595 specifications. It is particularly well suited for use in vacuum environments as well as applications in the aerospace, electronic, opto-electronic and specialty OEM industries. This two part silicone system offers convenient handling for bonding, sealing, coating and potting.

MasterSil 972TC-LO is an electrically insulator that has a thermal conductivity of 7-9 BTU•in/ft²•hr•°F [1.01-1.30 W/(m•K)]. It bonds well to a wide variety of substrates, including metals, composites, glass, ceramics, rubbers as well as many types of and plastics. Highly flexible, MasterSil 972TC-LO has an elongation of 40-80%, withstands aggressive thermal cycling and resists mechanical shock. This heat dissipative silicone system has a wide service temperature range is -120°F to +400°F.

This addition cured system does not require air for cross-linking. It features low shrinkage upon curing even in thick or wide cross sections. MasterSil 972TC-LO has a moderate viscosity of 30,000-40,000 cps with good flow properties and has a one to one mix ratio by weight. It has a long working life of 6-10 hours at room temperature. This compound is 100% solids and has a white color. Mastersil 972TC-LO is available in 50 gram syringe kits with additional sizes upon request.

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