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Power Tools Direct£2.52Visit shop Techfast Tfw1655 Bonded Epdm Washer 5.5 X 16Mm (Box Of 100)
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B&Q£6.73Visit shop B&Q - Tfw1655 Techfast Bonded Epdm Washer 5.5 X 16mm Box 100 Fortfw1655
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Amazon£6.74Visit shop TechFast Roofing - Bonded Washer | 5.5 x 16mm | Elementech | Box 100
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The Forgefix TechFast Bonded EPDM Washer is designed for professional contractors and serious DIY enthusiasts who need a reliable, watertight seal for roofing and external fixings. These washers excel at preventing moisture ingress and corrosion, significantly extending the lifespan of your assemblies. While they are engineered for superior durability, ensure you select the correct diameter for your specific screw type, as the 5.5mm internal diameter is optimized for specific TechFast fastening systems.
| Colour | Multicolor |
|---|---|
| Model Part Number | TFW1655 |
| Brand | Forgefix |
Yes, they feature an Elementech coating tested for 1000 hours in salt spray, making them highly resistant to coastal corrosion.
Yes, they are suitable for various fastening applications including wood-to-metal and metal-to-metal provided the screw diameter matches.
No, 5.5mm is the internal diameter designed to fit the screw shaft. The total washer width is 16mm.
No, these are 'bonded' washers, meaning the rubber is permanently attached to the metal backing for better performance.
This specific pack contains 100 individual bonded washers.
Ensure the fastener is not being driven at an angle and verify that the screw thread has fully engaged with the substrate.
Check if the fastener was overtightened and deformed the rubber, or if the surface being fixed is uneven, requiring a larger or more flexible sealing surface.
To ensure the best seal, drill the clearance hole according to your screw manufacturer's recommendations. Ensure the surface being fixed to is clean and free of debris. When installing, do not overtighten; you should aim for the rubber to slightly bulge around the edges of the metal washer, indicating a proper seal. These washers are maintenance-free, but it is recommended to inspect them every few years if the installation is in a high-corrosion coastal area. Store in a cool, dry place to maintain the integrity of the EPDM rubber.
