Engineered for superior weather resistance and durability, these sealing washers are crafted from EPDM rubber with a galvanised steel backing for long-lasting performance. Designed to create a watertight seal between screws or bolts and roofing materials, these washers effectively prevent leaks and corrosion in outdoor applications. The EPDM rubber provides excellent resistance to UV rays, ozone, and extreme temperatures, ensuring reliable sealing performance in various weather conditions. With their galvanised steel construction, these washers offer exceptional strength and corrosion resistance, making them suitable for use in demanding environments. Features & Benefits • Used to prevent washer ingress • Metal washer with rubber Specifications • Diameter: 16mm • Quantity: 100 • Material: Carbon Steel • Finish: Galvanised • Hole Size: 6.8mm