Dowsil 888 Silicone Joint Sealant

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Price Per Unit: $18.10

Price Per Box: $16.29

Dowsil 888 Silicone Joint Sealant is a high-performance, versatile sealant designed for sealing joints in Portland cement concrete pavements.
Vendor: Dowsil
Availability: In Stock

Physical Properties

Composition: One-part, cold applied, non-sag silicone sealant
Colour: Grey
Slump (astm d2202): Pass (< 0.30 inches)
Extrusion rate (astm c1183): Minimum 72 ml/min
Tack free time (astm c679): Pass (5 hours max)
Heat aging (astm c792): 3.05%
Durometer shore a-2 (astm c661): 15
Specific gravity (astm c792): 1.48
Cure time, ½” x ½” x 2” (73°f, 50% r.h.): Pass (21 day cure)
Bond, non-immersed: Pass (no cracks or separation)
Bond, water immersed: Pass (no cracks or separation)
Bond, oven aged: Pass (no cracks or separation)
Ultimate elongation (astm d412): ≥ 1000%
Tensile stress @ 150% (astm d412): 28 psi
Effects of accelerate weathering (astm c793): Pass (5,000 hours)
Resilience: 77%
Joint movement capability (astm c719): +100/-50 percent, 10 cycles (no failure)
Applicable standards: Astm d 5893 type ns, faa p-605, ss-s-200e (section 4.4.12) flame test, en 14187-5 hydrolysis test
Packaging information: 29 fl oz (857 ml) cartridges, 4.5 gal (17 l) bulk pails, 50 gal (189 l) bulk drums

Shipping & Delivery

$15.95 shipping on all orders nationwide, except for DG goods.

Dowsil 888 Silicone Joint Sealant

Vendor: Dowsil

Dowsil 888 Silicone Joint Sealant


Vendor: Dowsil

Dowsil 888 Silicone Joint Sealant

Size: 600ml
Package Type: Single Buy

DOWSIL™ 888 Silicone Joint Sealant

DOWSIL™ 888 is a one-part, non-sag silicone sealant specifically designed for sealing joints in Portland cement concrete pavements. This low-modulus sealant offers exceptional weather and UV resistance, along with short-term fuel resistance. It is cold-applied and ready to use as supplied, making it a convenient solution for both new construction and repair projects.

Key Features

  • Can be extruded in a wide temperature range (-20 to 120°F)
  • Suitable for joints with non-uniform widths
  • 100% extension and 50% compression movement capability
  • Low modulus for flexibility
  • Weather and UV resistant
  • Short-term fuel resistant
  • One-part, cold-applied, ready-to-use
  • Unprimed adhesion to Portland cement concrete


  • Concrete to concrete pavement joints
  • New construction
  • Repair and remedial applications
  • Joints with minor spalling


  • Accommodates joint movement and expansion
  • Long-lasting durability in harsh weather conditions
  • Resists degradation from UV exposure and short-term fuel contact
  • Easy application with hand or air-powered pump
  • No primer required for bonding to concrete
  • Quick skin-over time


  • Not recommended for continuous water immersion or totally confined spaces.
  • Not intended for use with asphalt.
  • Should not be applied to wet or damp surfaces or during inclement weather.

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