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Sflue Black (2159806B) - Structural Locking Band - Ø 152 (42-150-054)

The Sflue Black Structural Locking Band (2159806B) is a premium addition to your chimney installation, offering unmatched durability and safety. Designed specifically for solid fuel and gas/oil appliances, this high-quality band from Sflue Black provides excellent thermal insulation and robust construction, making it the ideal choice for stabilising your chimney system. Search for the latest accessories and complementary flue components to further enhance your installation and ensure a secure, e Read more...
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£85.99
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At a Glance

    HETAS approved and CE marked
    Dual stainless steel construction: 304-grade outer and 316L inner (both 0.40mm thick)
    Robust compressed rockwool insulation (230kg/m³) for excellent thermal efficiency
    Maintains a safe 50mm distance to combustibles
    Fully laser welded for superior strength and durability
    Versatile for use with woodstoves, gas, oil, and low sulphur coal appliances
    Essential for securing unsupported chimney stacks up to 2.5m above support

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.

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Price Match Guarantee: If you find the same product cheaper within 48 hours, we’ll match it and refund the difference.

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Have Questions?
Phone: 01670 206999
Email: [email protected]

The Sflue Black Structural Locking Band (2159806B) is essential for enhancing the stability and safety of your twin wall insulated chimney systems. This band is designed specifically for use with solid fuel and gas/oil appliances such as woodstoves, gas coal effect fires, and oil and gas boilers. Constructed from high-grade materials, the outer skin is made of 304-grade stainless steel, while the inner skin utilizes 316-grade stainless steel; both are 0.4mm thick, ensuring superior durability and resistance to high temperatures.

The insulation comprises compressed rockwool with a density of 230kg/m³, encapsulated within twist-lock couplers, providing excellent thermal efficiency. It ensures the required 50mm distance to combustibles is maintained, enhancing safety. Fully laser welded and HETAS approved, this locking band is the epitome of quality and reliability for any flue installation.

SKU: 42-150-054

Technical Specifications
SKU42-150-054
Product NameSflue Black Structural Locking Band - u00d8 152
Outer Material304 Stainless Steel (0.40mm thick)
Inner Material316L Stainless Steel (0.40mm thick)
InsulationCompressed Rockwool (230kg/mu00b3)
Distance To Combustibles50mm
ApprovalHETAS / CE
Warranty15 Years manufacturing defect, 2 Years paint
Diameter152mm
SystemSflue Black
• Ensure that the chimney system is adequately supported and that the installation area is clear of any combustibles, maintaining at least the 50mm clearance. • Fit the locking band securely around the chimney stack, aligning the barbed twist-lock couplers properly. • Follow the manufacturer’s installation guidelines carefully to secure the band uniformly. • Use appropriate tools for laser welded components; if unsure, consult a professional installer. • Always check local building regulations and HETAS guidelines to ensure full compliance during installation.

Yes, the Sflue Black Structural Locking Band is suitable for use with gas appliances, including gas coal effect fires and gas boilers.

The outer skin is made from 304-grade stainless steel, and the inner skin is made from 316-grade stainless steel. Both skins are 0.4mm thick for maximum durability.

The insulation used is compressed rockwool with a density of 230kg/m³, providing exceptional thermal efficiency.

Yes, it is HETAS approved and carries the CE marking, ensuring it meets high safety and performance standards.

Absolutely, it is suitable for solid fuel appliances, including woodstoves.

The Sflue system features an 8-barbed twist-lock coupling mechanism, secured using the locking band. Ensure a 50mm distance from any combustible materials.

The 50mm distance ensures that the flue does not come into contact with materials that could ignite, enhancing safety and compliance with building regulations.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, May 30th. Delivery times of products not in our warehouses depend on product availability and shipping. If you need a definitive delivery time give us a call. If you need faster stove or fireplace delivery please also give us a call. We can sometimes reduce longer lead times if we pay the carrier £25 for express delivery. Visit our Shipping Information page for more information.

Warranty & Returns +

All our products come with warranties. Mi-Flex offers a lifetime guarantee. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.

Price Match Guarantee +

We will match any price like for like on a retail basis. Give us a call if you find it cheaper and want to buy from us.

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