Screw-FIX Joiner - Ø 125 (25-125-J)
At a Glance
- Compatible with MI-FLEX 316 and 904 multi-fuel liners
Engineered for temperatures up to 600°C (T600 designation)
Constructed from durable 316L stainless steel for longevity
Meets Building Regulations Document J for safe chimney installations
Designed for wood, smokeless coal, gas, and oil appliances
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, June 24th. This is based on current delivery times for this product. Delivery for products not in our warehouses can be delayed because of third party carriers. If you need a stove, or other bulky product, to be delivered by a specific time in the next 7 days then please 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 and you can read in our blog about they types and terms and conditions for warranties. Mi-Flex flue liner, for example, comes with a lifetime guarantee. Give us a call if you want to know about a specific warranty. 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.
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 Joiner - Ø 125 is a critical accessory meticulously engineered for use with MI-FLEX 316 and 904 flexible flue liners. Designed to create a complete chimney system, this tool ensures seamless joining of two lengths of multi-fuel liner, making it an excellent choice for installations where the liner length exceeds the standard flex available. Ideally suited for use on solid fuel appliances burning wood (with less than 20% moisture), smokeless coal, gas, and oil, this joiner can withstand temperatures up to 600°C (T600 designation).
It adheres to Building Regulations Document J, which mandates that flexible flue liners be entirely enclosed within a masonry chimney. Note: The joiner is specifically for multi-fuel liners and is not suitable for gas liners.
SKU: 25-125-J
| Technical Specifications | |
|---|---|
| SKU | 25-125-J |
| Dimensions | u00d8 125mm |
| Material | 316L Stainless Steel |
| Temperature Rating | Up to 600u00b0C |
| Fuel Compatibility | Wood, Smokeless Coal, Gas, Oil |
| Standards | CE, HETAS, BSEN 1856-2 T600 |
| System | MI-FLEX Accessories MF20 |
