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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. Read more...
Sflue Black (2159806B) - Structural Locking Band - Ø 152
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Now only £68.99
Give us a call if you find it cheaper and we'll normally price match.
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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.

We Won't Be Beaten On Price

At National Flues, we continuously monitor competitor prices. This ensures that we consistently offer you the best deals on all our products. Here’s how we keep your costs low:

  • Daily Price Matching: Our team adjusts prices to ensure we stay competitive.
  • Bulk Purchasing Power: We sell a lot, so we can negotiate better rates with suppliers, passing the savings directly to you.
  • Operational Efficiency: We have streamlined processes to reduce overhead.

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

Free Delivery Over £100: Orders over £100 are free delivery (call us if delivery is required outside the mainland UK).

“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.

Have Questions?
Phone: 01670 206999
Email: sales@nationalflues.com

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

Delivery Information* +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, November 17th. This is based on current lead times. Bear in mind that it is a busy time of year. If you need a product delivered by a specific time in the next 7 days, then please give us a call on 01670 206 999. Visit our Shipping Information page for more information.

About National Flues Ltd +

We began over 30 years ago as a fireplace shop in the North East. We now supply hundreds of trade professionals and thousands of retail customers, all across the UK, every month. We are still a family owned business, lead by the MD Neil, and always try our best to deliver the best possible experience. We also price match, so give us a call if you find this cheaper and want to buy from us. Visit our about us page to read a bit more.

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Technical Specifications
SKU42-150-054
Product NameSflue Black Structural Locking Band - Ø 152
Outer Material304 Stainless Steel (0.40mm thick)
Inner Material316L Stainless Steel (0.40mm thick)
InsulationCompressed Rockwool (230kg/m³)
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.

 

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