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Features & Benefits

- Can be extruded from -20 to 120°F.
- Seals irregular surfaces, may be used in joints that are not uniform in width.
- Fully elastic, movement capability 100% extension and 50% compression.
- Low modulus.
- Weather and UV resistant.
- Fuel resistant-short term exposure. Refer to Dow 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.
- Fast cure time – typically, the sealant will have a skin-over time of one hour or less at standard conditions.
- Long-life reliability


- Sealing transverse contraction and expansion joints
- Sealing longitudinal, center line and shoulder joints in Portland cement concrete
- Outstanding performance in highway, airport and bridge joints in which high movement occurs
- For use in repair or remedial applications where other joint sealing materials have failed
- New construction, repair or remedial applications

Dowsil 888

Dowsil 888

DOWSIL 888 Silicone Joint Sealant is a one-part, non-sag silicone material that cures to a low-modulus silicone rubber upon exposure to atmospheric moisture. It can be used for concrete to concrete pavement joints, road pavement and general construction joints. It is ideal for use in new construction, repair or remedial applications. 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. DOW 888 Silicone Joint Sealant can be applied over a wide temperature range.

Colour: Grey, 16 per Box.


  • Surface Preparation:

For optimum adhesion, the surface must be clean, dry and frost-free.

  • Placement:

Refer to technical data sheet for detailed information.

  • Storage:

Typically 12 months unopened packaging in a cool and dry storage area.


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Technical Data SheetSafety Data Sheet View full details