Screw-FIX Long Tail Adaptor - Ø 100
At a Glance
- 0.6mm thick 316L stainless steel construction
- Seamless connection between rigid single-wall flue systems and MI-FLEX flexible liners
- High temperature rating up to 600°C (T600 designation)
- Ensures gas-tight seal with fire cement, ceramic rope, or high-temperature sealant
- Fully compliant with Building Regulations Document J for safe installations

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: [email protected]
- Info
- Specs
- Install
- FAQs
The Screw-FIX Long Tail Adaptor Ø 100 is a 0.6mm thick, 316 stainless steel fitting that serves as a crucial transitional joint for connecting a rigid single-wall flue system to a MI-FLEX flexible flue liner. This adaptor is part of our MI-FLEX-Screw Fix range, designed to seamlessly integrate with MI-FLEX 316 and 904 flexible flue liners. Compliance with Building Regulations Document J ensures the safe and efficient enclosure of the flue liner within a masonry chimney, making it suitable for various fuel types including wood, smokeless coal, gas, and oil, with a high-temperature rating of up to 600°C (T600 designation).
Our adaptors are engineered to transition smoothly from the connecting flue system to the flexible liner, guaranteeing a gas-tight seal when used with fire cement, ceramic rope, or high-temperature sealant. Regular sweeps and maintenance by a competent person are recommended, and for solid fuel applications, HETAS-registered sweeps provide the best service.
SKU: 25-100-MAELT
Technical Specifications | |
---|---|
Material | 316L Stainless Steel |
Thickness | 0.6mm |
Temperature Rating | 600u00b0C (T600 designation) |
Dimensions | u00d8 100 mm |
System Compatibility | MI-FLEX Accessories MF20 |
Approvals | CE / HETAS |
Suitable Fuels | Wood, Oil, Gas, Smokeless Coal |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, April 4th. 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. If you find it cheaper within 48 hours, we'll refund the difference.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
The Screw-FIX Long Tail Adaptor Ø 100 is a top-tier product in our flue accessories range. We've tested it for reliability and performance, and it meets all necessary standards. We are proud to offer this adaptor to both our trade and retail customers nationwide. Rarely beaten on price, and delivered with our reliable service.
The Screw-FIX Long Tail Adaptor Ø 100 is designed to create a secure and seamless connection between a rigid single-wall connecting flue system and a MI-FLEX flexible flue liner.
National Flues is a trusted supplier of fireplaces and flue systems across the UK, offering unbeatable prices, reliable delivery, and dedicated service to both retail and trade customers.
