High Temperature Silicone Sealant - Bond it - HT30

High Temperature Silicone Sealant 300°C HT30 is a ready-to-use, acetic curing, silicone sealant. S...

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B&QB&Q - High Temperature Silicone Sealant 300 C
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OnBuy.comHigh Temperature Silicone Sealant 300C **1-Pack** 5061032251322
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Product Information

Full details

The Bond it HT30 High Temperature Silicone Sealant is designed for users needing a robust sealing solution in extreme heat environments. Its key benefit is the ability to withstand continuous temperatures of 250°C and short bursts up to 300°C, offering excellent UV resistance and weatherproofing. A potential caveat is its acetic cure, which may not be suitable for all materials sensitive to acids.

All features

Model Part NumberHT30
BrandBond it

Extended Product Information

FAQs

What is the maximum continuous temperature the HT30 can withstand?

The HT30 can permanently withstand temperatures of 250°C and up to 300°C for short periods.

Is this sealant safe for all types of metal?

It is suitable for most common metals, but the acetic cure can corrode sensitive metals like copper and brass. Always test on a small, hidden area if unsure.

How long does it take to cure?

The HT30 typically skins over in 10-20 minutes and fully cures within 24 hours, depending on temperature and humidity. Thicker applications may take longer.

Can I paint over this sealant?

Once fully cured, the sealant can generally be painted over with most paint types, although it's advisable to test compatibility first.

What is the shelf life of the HT30 sealant?

The typical shelf life is 12 months when stored in original, unopened packaging in a cool, dry place.

Is the HT30 waterproof?

Yes, once cured, the HT30 is weatherproof and provides a waterproof seal against moisture.

Can this be used for food-related applications?

No, the HT30 is not food-grade and should not be used in direct contact with food or in applications where it might leach into consumables.

Troubleshooting

Sealant not adhering to the surface

Ensure surfaces are thoroughly cleaned and dried, free from dust, grease, oil, or old sealant residue. Reapply after proper surface preparation.

Sealant remains tacky or uncured after 24 hours

Ensure adequate ventilation and that the sealant is applied in a reasonably thin layer. Extreme cold or humidity can slow down the curing process. Verify the product has not expired.

Strong odor persists after curing

The acetic cure releases a vinegar-like odor during curing. Ensure good ventilation during application and initial curing. The odor should dissipate significantly once fully cured, but slight residual smell might remain in enclosed spaces.

Pros and Cons

Pros

  • Excellent performance in high-temperature applications.
  • Durable and weatherproof seal.
  • Resistant to UV damage.
  • Easy to apply straight from the tube.
  • Fast curing time.

Cons

  • Acetic cure may react with certain sensitive materials (e.g., some metals, plastics, or concrete).
  • May release a strong vinegar-like odor during curing.
  • Not suitable for applications requiring food-grade or medical-grade sealants.
  • Requires adequate ventilation during application and curing.

Setup, Compatibility & Care

Setup:

  1. Ensure surfaces are clean, dry, and free from dust, grease, and oil.
  2. Remove any old sealant or debris.
  3. Apply the sealant using a standard sealant gun.
  4. Tool the sealant within 5-10 minutes using a wet tool or finger for a smooth finish.

Compatibility:

  • Suitable for use on metal, glass, ceramics, and some plastics.
  • Caution: The acetic acid released during curing can corrode or damage sensitive materials like copper, brass, certain types of concrete, and some plastics. Always test on an inconspicuous area first if unsure.

Care:

  • Once fully cured, the sealant is durable and requires minimal care.
  • Clean any spills or excess sealant immediately with a damp cloth before it cures.
  • Avoid prolonged contact with incompatible materials.

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