Products / Master Seal Bonded Washers - Aluminum

An aluminum bonded washer for sealing roofing and other fasteners, pairing an aluminum backing with a resilient facing material that is compressed and fastened against the substrate to form a permanent cushion and seal. Protects against installation damage (spinning fastener/torque) and vibration damage, and is used on metal roofs and siding where expansion and contraction of the panel requires a permanent resilient seal, as well as on glass, plastic, fiberglass, porcelain and painted surfaces. Sold in quantities of 50-100 across 3 SKUs (screw sizes #10, #12, #14).