Master Bond Introduces a New Addition Cured Silicone that Meets USP Class VI and ISO 10993-5 Specifications for Biocompatibility and Cytoxicity

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Master Bond MasterSil 153Med is a two component silicone compound with a paste consistency for high performance bonding and sealing. Most significantly it can be used for medical device applications as it meets USP Class VI testing and ISO 10993-5 for cytotoxicity.

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Formulated for medical device applications, MasterSil 153Med passes USP Class VI and ISO 10993-5 testing. This new, two part silicone with a paste consistency, features a convenient one to one mix ratio by weight, and does not require exposure to air and humidity for cross-linking. It has a long working life of 5-7 hours and will not outgas while curing.

As is true with most silicones, MasterSil 153Med delivers high temperature resistance up to 400°F and superior flexibility. Its flexibility allows it to withstand thermal cycling, vibration and shock. It has a softer durometer enabling repairability. Its Shore A hardness is 20-35. It bonds well to a variety of substrates including metals, glass, ceramics, many plastics and cured silicone rubber. MasterSil 153Med has a self priming feature that enhances the bonding properties of this system.

Once cured, this optically clear silicone is a competent electrical insulator. It has low exotherm and contains no solvents. Its water resistance is exceptional. MasterSil 153Med is available in a variety of standard packaging options, such as ½ pint, pint, quart, gallon and 5 gallon kits. A general industrial grade called MasterSil 153 is also available.

Master Bond Two Component Silicone Systems
Master Bond MasterSil 153Med is a two component, medical grade silicone adhesive that resists temperatures up to 400°F. Read more about Master Bond’s addition cured silicones at or contact Tech Support. Phone: +1-201-343-8983 Fax: +1-201-343-2132 Email: technical(at)masterbond(dot)com.

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Jane Trager
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