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Selleys Fireblock XT Hybrid Polymer Fire Sealant 600ml

$15.90

SKU: SEL044

SKU: SEL044

  • Fire Rated Protection: Up to 4 hours fire resistance in approved systems
  • Durable & Flexible: Maintains seal in movement joints and penetrations
  • Paintable & Low Odour: Easy to finish and suitable for occupied areas
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Description

Selleys Fireblock XT Hybrid Polymer Fire Sealant 600ml

Selleys Fireblock XT Hybrid Polymer Fire Sealant 600ml delivers a strong, flexible seal that protects your building against fire and noise. This high-performance sealant meets Australian fire standards, offering up to 4 hours of fire resistance and excellent acoustic ratings. It uses advanced moisture-curing silyl-modified polymer (SMP) technology, making it easy to apply and durable in tough conditions.

Key Features

  • Uses moisture curing SMP technology for strong adhesion and flexibility.

  • High UV resistance makes it suitable for internal and external use.

  • Paintable with water-based paints for a clean finish.

  • Low VOC content (15 g/L) supports healthier indoor air quality.

  • Available in grey to blend well with most construction materials.

Target Use

Surface Type Typical Applications Tips for Best Results
Concrete, Masonry, Brick Fire-rated construction joints, control joints Use backing rod to control sealant depth; tool within 30 minutes.
AAC, Plasterboard, Fibre Cement Acoustic sealing between building materials Ensure surfaces are clean and dry before application.
Metals & Timber Fire and acoustic sealing around penetrations Apply evenly and avoid gaps for maximum protection.
Plastic Surfaces* Suitable plastics in fire-rated assemblies Pre-test plastics for compatibility.

How to Use

  1. Cut tip of sausage. Insert into caulking gun and attach nozzle.
  2. Apply sealant smoothly into joint. Ensure all substrates are well wetted out with sealant.
  3. For fire rating, joint width should be between 20mm and 40mm. Minimum joint depth should be 10mm or half the width for joints wider than 20mm.
  4. Sealant will form thick skin typically within 24 hours. Full cure after approximately 7 days. In dry or cool conditions, the sealant cure will be longer.
  5. Paint with water-based paints after product completely dries for optimal appearance.

Specifications

Product Type Hybrid polymer fire and acoustic sealant
Size 600 ml cartridge
Colour Grey
Technology Moisture curing silyl-modified polymer (SMP)
Fire Rating Up to 4 hours (AS1530.4-2014)
Acoustic Rating Up to 60 Rw
Movement Capability +/- 20% (ISO 9047)

Precautions

  • Use in a well-ventilated area and avoid inhaling vapours.

  • Wear gloves and eye protection to prevent irritation.

  • Keep out of reach of children.

  • Causes serious eye irritation; rinse immediately if contact occurs.

  • Not suitable for polyethylene, polypropylene, or Teflon.

  • Follow all safety instructions on the label and safety data sheet.

FAQ

How long does Selleys Fireblock XT take to cure?

Selleys Fireblock XT Hybrid Polymer Fire Sealant 600ml skins in approximately 50 minutes after application. It cures at a rate of around 2–3 mm per day, depending on temperature, humidity, and joint depth. Full cure is essential before subjecting the seal to fire exposure or painting.

Can I use this sealant outdoors?

Yes, Selleys Fireblock XT Hybrid Polymer Fire Sealant 600ml is suitable for both indoor and outdoor use. It offers excellent UV resistance and weather durability, making it ideal for external fire-rated joints and penetrations. Always ensure proper surface preparation for the best results in outdoor conditions.

Is this sealant paintable?

Yes, Selleys Fireblock XT Hybrid Polymer Fire Sealant 600ml can be painted with water-based paints after it has fully cured. This helps achieve a clean, professional finish that blends with surrounding surfaces. Ensure the sealant is completely dry before painting for optimal adhesion and appearance.

Selleys Fireblock XT Hybrid Polymer Fire Sealant 600ml offers a flexible, durable seal that protects your building from fire and noise.

For more options, look into our Sealant Range.

Additional information
Weight 0.9 kg
Dimensions 35 × 5 × 5 cm
Brand

Selleys

ALL Product Type

Sealant

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Sealants and Adhesives

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