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Dowsil 888 Silicone Joint Sealant

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, one-part silicone sealant designed for concrete pavement joints. It offers exceptional movement capability, weather resistance, and fuel resistance, making it ideal for new construction and repair applications. This non-sag sealant can be applied over a wide temperature range and provides unprimed adhesion to concrete, ensuring a durable and long-lasting seal.
Vendor: Dowsil
SKU: SILDC888/SSG
Availability: In Stock
$18.10
$18.10
Prices do not include GST
Physical Properties
Colour: Gray
Slump: Pass < 0.30 inches
Extrusion rate: 72 ml/min
Tack free time: Pass 5 hours max
Heat aging: 3.05% loss
Durometer shore a: 15
Specific gravity: 1.48
Cure time: 21 days at 25°c and 50% rh
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: ≥ 1000%
Tensile stress @ 150%: 28 psi
Effects of accelerate weathering: Pass 5,000 hours
Resilience: 77%
Joint movement capability: +100/-50 percent, 10 cycles no failure
Application temperature: -20°f to 120°f (-28.8°c to 48.8°c)
Storage temperature: ≤ 32°c (90°f)
Packaging options: 29 fl oz (857 ml) cartridge, 4.5 gal (17 l) pail, 50 gal (189 l) drum
Standards compliance: Astm d 5893 type ns, faa p-605, ss-s-200e, en 14187-5
Shipping & Delivery

$15.95 + GST for Australia-wide shipping, excluding DG, oversized, long-length, and bagged items over 15kg. Rural, remote areas and site deliveries are also ineligible. If your order includes any of these, we will contact you to arrange additional freight fees. Online purchases only.

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Dowsil 888 Silicone Joint Sealant
Dowsil
Dowsil 888 Silicone Joint Sealant
$18.10
Dowsil 888 Silicone Joint Sealant
Dowsil
Dowsil 888 Silicone Joint Sealant
$18.10
Size: 600ml
Package Type: Single Buy
Description  
Use Dowsil™ 888 Silicone Joint Sealant for: Sealing concrete pavement joints, accommodating movement and resisting weather, UV, and fuel exposure.

Dowsil™ 888 Silicone Joint Sealant is a high-performance, one-part silicone sealant designed for concrete pavement joints. Its low-modulus formulation allows for significant movement, accommodating 100% extension and 50% compression. This cold-applied sealant offers excellent weather and UV resistance, as well as short-term fuel resistance, making it ideal for various pavement applications. It provides unprimed adhesion to clean, dry Portland cement concrete, simplifying installation and ensuring durable, long-lasting seals.

Key Features of Dowsil™ 888 Silicone Joint Sealant

  • High movement capability: 100% extension and 50% compression
  • Weather and UV resistant
  • Fuel resistant (short-term exposure)
  • Low modulus for flexibility
  • One-part, cold-applied, ready-to-use
  • Unprimed adhesion to Portland cement concrete
  • Wide application temperature range (-20 to 120°F)

Technical Overview

  • Chemical Properties: One-part, non-sag silicone
  • Application Temperature Range: -20°F to 120°F (-29°C to 49°C)

Trade Professional Information

  • Required Tools: Caulking gun, air-powered pump (for bulk applications), joint saw, backer rod installation tools
  • Trade-Specific Tips: Ensure joints are clean, dry, and free of frost before application. Use the correct backer rod size to prevent three-sided adhesion. Recess the sealant to the proper depth for optimal performance and to allow for future grinding.
  • Common Issues and Solutions: Ensure proper joint design to accommodate movement. Avoid application during inclement weather or on wet surfaces.

Storage and Shelf Life

  • Storage Requirements: Store in original, unopened containers below 32°C (90°F)
  • Shelf Life Information: Refer to product packaging for “Use By” date
  • Temperature Considerations: Avoid storing at high temperatures

Certifications

  • ASTM D 5893 Type NS
  • FAA P-605
  • Meets SS-S-200E (section 4.4.12) Flame Test Requirements
  • EN 14187-5 Hydrolysis Test
Common Questions  

Frequently Asked Questions About Dowsil™ 888 Silicone Joint Sealant

  • Q: Can this sealant be used on asphalt? A: No, it is not intended for use with asphalt.
  • Q: Does it require a primer? A: No, it provides unprimed adhesion to clean, dry concrete.
  • Q: What is the movement capability? A: 100% extension and 50% compression.
  • Q: Can it be used in all weather conditions? A: No, avoid application during inclement weather or on wet surfaces.
Uses & Benefits  

Use Dowsil™ 888 Silicone Joint Sealant for:

  • Sealing concrete pavement joints
  • Repairing spalled joints
  • New concrete construction
  • Remedial applications
  • Joints with minor spalling

Why Use Dowsil™ 888 Silicone Joint Sealant:

  • Provides a durable, flexible seal
  • Reduces maintenance requirements
  • Extends pavement life
  • Easy application
  • Performs in a wide range of temperatures
How To Apply  

How to apply Dowsil™ 888 Silicone Joint Sealant:

  1. Prepare the joint: clean and dry the concrete surface.
  2. Install backer rod to the correct depth.
  3. Apply the sealant using a caulking gun or air-powered pump.
  4. Tool the sealant to ensure proper contact and a smooth finish.
  5. Allow the sealant to cure.
Limitations and Safety Info  

Dowsil™ 888 Silicone Joint Sealant limitations:

  • Not recommended for continuous water immersion.
  • Not for use in totally confined spaces.
  • Not compatible with asphalt.
  • Do not apply to wet or damp surfaces.
  • Not for medical or pharmaceutical uses.
  • Wear appropriate PPE, including gloves and eye protection.
  • Ensure adequate ventilation during application.
Suitable Substrates  

Dowsil™ 888 Silicone Joint Sealant can be used on the following substrates:

  • Portland cement concrete

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