One component, room temperature curing, silicone for bonding and sealing

Key Features

  • Meets UL 94V-1 and UL 94V-0 specifications
  • Excellent electrical insulation
  • One part system, fast set-up time
  • High degree of flexibility

Product Description

MasterSil 708FR is a one component, high performance RTV silicone that is mainly used for its flame retardancy. It passes UL tests with a flame classification for 94V-1 for thicknesses of 0.75 mm and 94V-0 for a 3 mm thickness. It adheres well to a wide variety of substrates including glass, metals and many plastics. The rapidity of the cure depends on the thickness of the layer and the humidity; the thicker the layer the slower the cure. It is exceptionally soft with superb elasticity and flexibility, and outstanding electrical insulation properties. Most importantly, it is non-corrosive, fast setting, and has a flowable consistency. MasterSil 708FR is serviceable over the broad temperature range of -45°C to +105°C, as per UL specifications, and is gray in color.

Industrial Certifications

Meets EU Directive 2015/863

UL 94V-0 Flame Resistant



MasterSil 708FR is available is various sizes and units to accommodate customer's needs.

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