Dowsil 791T Silicone Sealant - Translucent 310ml

Dowsil™ 791T Translucent Silicone Sealant is a high-performance, one-part neutral silicone sealant...

Best current price£9.67from Power Tools Direct

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Power Tools DirectDowsil Brown 4024908/C05 791 Silicone Sealant 310Ml
£5.95 delivery
£9.67
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Blueperry agriculture (UK)Dowsil White 791 Silicone Sealant 310Ml 4024912/C05
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£10.57
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Travis PerkinsDowsil 791 White Weatherproofing Silicone Sealant, 310ml
£30.00 delivery
£11.11
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eBayDow 791 Silicone Sealant Brown 310ml
£3.50 delivery
£12.27
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Rapid Online - Rapid Electronics Ltd.Dow 4024907/C05 791 Silicone Sealant Black 310ml
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£13.73
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Product Information

Full details

This guide is for anyone using the Dowsil™ 791T Translucent Silicone Sealant for weather sealing. The sealant provides excellent adhesion and durability against harsh environmental conditions, offering remarkable flexibility for joint movement. Keep in mind that while it works in a wide temperature range, it's best applied within the specified limits.

All features

Model Part Number4028427/C05
BrandDowsil

Extended Product Information

FAQs

What is the working time of the sealant?

The working time is approximately 20-30 minutes.

How long does it take for the sealant to become tack-free?

It becomes tack-free in about 30 minutes.

What is the temperature range for application?

The application temperature range is -25 to +50°C.

Is the sealant suitable for outdoor use?

Yes, it is designed for weather sealing and is suitable for outdoor use.

Does it have good UV resistance?

Yes, it provides outstanding durability against UV radiation.

What kind of movement can it accommodate?

It allows for ± 50% joint movement.

What surfaces can it be applied to?

It offers excellent adhesion to a variety of exterior surfaces.

What is the shelf life of the sealant?

The shelf life is typically 12 months from the date of manufacture when stored properly.

Troubleshooting

Sealant isn't adhering properly.

Ensure the surface is clean, dry, and free of contaminants. Use a suitable primer if necessary.

Sealant is cracking after application.

Make sure the joint is within the sealant's movement capability (± 50%). Check the temperature conditions during application and curing.

Sealant isn't curing.

Ensure the application temperature is within the specified range (-25 to +50°C). Check the expiration date of the sealant.

Pros and Cons

Pros

  • Durable against harsh weather conditions.
  • Excellent adhesion to various surfaces.
  • Accommodates significant joint movement.
  • Quick tack-free time.
  • Wide temperature application range.

Cons

  • Limited working time of 20-30 minutes.
  • Specific temperature application range must be observed.
  • Requires proper surface preparation for optimal adhesion.

Setup, Compatibility & Care

  1. Surface Preparation: Ensure the surfaces are clean, dry, and free of any contaminants like dust, oil, or existing sealants. Clean with a suitable solvent.
  2. Application: Apply the sealant using a caulking gun. Cut the nozzle to the desired bead size.
  3. Tooling: Tool the sealant within the working time (20-30 minutes) to ensure proper contact with the surfaces and a smooth finish.
  4. Curing: Allow the sealant to cure completely according to the manufacturer's instructions before exposing it to weather or use.
  5. Compatibility: This sealant is compatible with a wide range of materials. However, always test the sealant on a small, inconspicuous area to ensure compatibility before full application.
  6. Storage: Store the sealant in a cool, dry place. The shelf life is typically 12 months from the date of manufacture when stored properly.

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