EPDM Aluminium Sealing Washers

EPDM aluminium sealing washers provide a reliable weatherproof seal where fasteners penetrate roofing, cladding, and sheet materials. Each washer combines an aluminium outer ring with a bonded EPDM rubber backing, compressing against the surface when tightened to form an effective barrier against water ingress. With a 29mm outer diameter and a 6.8mm hole size, these washers are suited to use with standard roofing screws and fixings commonly used in sheet metal, corrugated roofing, and similar applications. The aluminium construction offers good corrosion resistance, making them appropriate for exterior use where exposure to the elements is a concern. Supplied in packs of 100, these sealing washers are a practical trade buy for roofers, cladding contractors, and general builders working on projects that require a dependable watertight fixing.