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Power Tools Direct£2.46Visit shop Techfast Tfw1663 Bonded Epdm Washer 6.3 X 16Mm (Box Of 100)
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The Forgefix TechFast Bonded EPDM Washer is designed for construction professionals and DIY enthusiasts who require a secure, weather-resistant seal for roofing and external fixings. These washers are engineered to prevent moisture ingress, protecting both the fastener and the structural material from corrosion and environmental damage. While highly effective at creating a watertight barrier, they are specifically engineered for use with compatible screw diameters, requiring precise matching to ensure the seal integrity is maintained during installation.
| Colour | Silver |
|---|---|
| Model Part Number | TFW1955 |
| Brand | Forgefix |
Yes, they are suitable for securing cladding or roofing sheets onto timber structures where moisture protection is required.
It is not recommended to reuse them, as the EPDM rubber becomes permanently compressed during the first installation.
The seal is made from EPDM (Ethylene Propylene Diene Monomer), a synthetic rubber known for its weather resistance.
By sealing the hole, they prevent moisture from reaching the metal fastener, which is a major factor in reducing corrosion.
Each pack of the TFW1955 model contains 100 washers.
Ensure the screw is not over-tightened or under-tightened; check that the surface being fixed is clean and flat.
Check the screw head for burrs or sharp edges that might be catching the rubber during the tightening process.
To ensure optimal performance, verify that your fastener diameter matches the internal diameter of the washer. Always place the EPDM (rubber) side against the surface material being fixed to create the seal. Avoid over-tightening the screw, as excessive pressure can damage the integrity of the EPDM bond. Store the washers in a cool, dry place away from direct sunlight to prevent premature UV degradation of the rubber seal before use.
