Dow Corning 888 Silicone Joint Sealant

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Dow Corning 888 is a Non-sag silicone joint sealant for Portland cement concrete pavement joints.

Product Features

  • Can be extruded from -20 to 120°F.

  • May be used in joints that are not uniform in width.

  • Movement capability 100% extension and 50% compression.

  • Low modulus.

  • Weather and UV resistant.

  • Fuel resistant-short term exposure. Refer to Dow Corning form number 62-207 for more information.

  • One component, cold applied, ready-to-use as supplied; dispensed directly from the bulk container into the joint by hand or with an air-powered pump.

  • Unprimed adhesion – primer is not required for bonding to Portland cement concrete. For optimum adhesion, the surface must be clean, dry and frost-free.

  • Cure time – typically, the sealant will have a skin-over time of one hour or less at standard conditions.


  • Dow Corning® 888 Silicone Joint Sealant can be used for concrete to concrete pavement joints.

  • For use in new construction, repair or remedial applications. Dow Corning 888 Silicone Joint Sealant may be used to seal joints that are not uniform in width provided the movement capability of the sealant is not exceeded. May also be used in joints with minor spalling.