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Low Stress, Optically Clear, One Part Silicone Meets NASA Low Outgassing Specifications

Published:2015-06-02Author:Sources:Views:979

Passing ASTM E595 testing for NASA low outgassing, E-linking MasterSil 920-LO is a high performance, room temperature vulcanizing silicone for sealing, coating and small encapsulations. This single component system has a moderate, flowable viscosity and a solid electrical profile, which makes it well suited for conformal coating applications in the electronic and optical industries. Featuring a soft durometer of 25-35 Shore A, this low stress silicone can protect sensitive electronic components.

As a one part system, MasterSil 920-LO offers convenient handling with no mixing and has a neutral non-corrosive cure. Similar to other one component silicones, the curing mechanism is based on humidity, where the higher it is, the faster the cure. Its tack free time ranges from 45-60 minutes. MasterSil 920-LO bonds very well to a wide variety of substrates including metals, glass as well as many plastics and rubber materials. With its inherent flexibility, the compound can withstand rigorous thermal cycling and shock. It is also optically clear and has a refractive index of 1.43

It is serviceable over the wide temperature range of -175°F to +500°F and has a six month shelf life in its original, unopened packaging at room temperature. MasterSil 920-LO is available in syringes, 100 gram bottles, 200 gram bottles and pint containers.


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