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Sflue Black (2108605MTB) - Locking Band SCREW TOGGLE - Ø 127 (42-125-059)

Discover the exceptional Sflue Black Locking Band SCREW TOGGLE Ø 127 by National Flues, an essential component for any chimney flue system. This top-quality locking band not only meets but exceeds safety standards with HETAS approval and CE marking, ensuring a robust solution for woodstoves, oil and gas boilers, and coal-effect fires. Enhance your flue system with this durable stainless steel accessory and explore our range of complementary chimney accessories for a complete and safe installation.
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£14.99
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At a Glance

  • HETAS approved and CE marked
  • Durable construction with 316L and 304-grade stainless steel
  • Compressed rockwool insulation for excellent thermal resistance
  • Easy installation with an 8-barbed twist-lock mechanism
  • Reinforces chimney flue joints for added safety
  • Suitable for solid fuel, woodstove, oil, gas and low sulphur coal appliances

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.
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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 (2108605MTB) Locking Band SCREW TOGGLE Ø 127 is a versatile and essential component for chimney flue systems, designed for use with both solid fuel and gas/oil appliances such as woodstoves, gas coal-effect fires, and oil and gas boilers. This locking band is constructed with a 304-grade stainless steel outer skin and a 316-grade stainless steel inner skin, both 0.4mm thick, ensuring superior durability and resistance to high temperatures. The insulation consists of compressed rockwool with a density of 230kg/m³, encapsulated within twist-lock couplers and fully laser welded for enhanced safety.

Certified by HETAS and CE marked, it complies with designation number EN1856-1 T450 N1 D V2 L50040 G50, guaranteeing top-tier performance and safety standards. Installation is straightforward, with an 8-barbed twist-lock mechanism that keeps components securely in place using the Locking Band. It is crucial to maintain a 50mm distance from the flue to any combustible materials.

SKU: 42-125-059

Technical Specifications
SKU42-125-059
ModelSflue Black (2108605MTB)
DesignationEN1856-1 T450 N1 D V2 L50040 G(50)
Inner Material316L Stainless Steel (0.40mm)
Outer Material304 Stainless Steel (0.40mm)
InsulationCompressed Rockwool (230kg/mu00b3)
FuelsWood, Oil, Gas, Low sulphur coal
Clearance50mm from combustibles
Warranty15 Years manufacturing defect, 2 Years paint
Ensure a minimum 50mm gap from any combustible materials when installing the locking band. Use the integrated 8-barbed twist-lock mechanism for secure attachment. The system is designed for use with unbarbed female couplers on elbows and 135° tee branches. Follow all manufacturer guidelines carefully. If you require additional installation components such as extended coupling kits or sealing accessories, please search our optional accessories section to complement your setup.

The Sflue Black Locking Band SCREW TOGGLE Ø 127 can be used with solid fuel and gas/oil appliances such as woodstoves, gas coal-effect fires, and oil and gas boilers.

The outer skin is made of 304-grade stainless steel, while the inner skin is 316-grade stainless steel, both 0.4mm thick.

Yes, the insulation is made of compressed rockwool with a density of 230kg/m³, providing excellent thermal resistance.

Yes, the Sflue Black Locking Band is HETAS Approved and CE marked, meeting the standards of designation number EN1856-1 T450 N1 D V2 L50040 G50.

The locking band should be used with an 8-barbed twist-lock mechanism, ensuring components are secure. Maintain a 50mm distance from any combustible materials.

Yes, the screw-toggle locking band is designed to provide additional strength on joints, particularly with unbarbed female couplers and 135° tee branches.

At National Flues, we offer reliable nationwide delivery and competitive pricing for both retail and trade customers.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Wednesday, April 30th. If you need faster stove or fireplace delivery please give us a call. We can often 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.

Read our review in our Sflue Black (2108605MTB) - Locking Band SCREW TOGGLE - Ø 127 buyers guide

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