This copper washer gasket set is designed for marine meters and instrument accessories. It provides a reliable, sealing flat washer ring with a standard M10x14x1 dimension, supplied as 20 pieces in a single specification. The set includes sizes M5, M6, M8, and M10–M48 to cover a range of common bolt fittings used in marine applications. Key benefits Reliable sealing in harsh marine environments, helping prevent leaks and ingress. Copper material offers good malleability for a tight, uniform seal under compression. Durable and corrosionresistant for long service life in saltwater and humid conditions. Quantity of 20 pieces ensures replacements are available for multiple installations; single specification provides consistency. Key attributes Material: Copper Type: Washer gasket / sealing flat washer ring Dimension: M10x14x1 (inner diameter x outer diameter x thickness) Included sizes: M5, M6, M8, M10–M48 Quantity: 20 pieces Specification: Single specification Applications: For marine meter applications and instrument accessories requiring copper sealing washers Two to three use cases Replacing worn or damaged copper washers on marine meter housings during routine maintenance on boats or ships. Sealing connections in instrument panels and accessories to prevent water intrusion and ensure reliable readings. Keeping a ready spare part kit for maintenance of marine fittings and valves that require copper washers in the M5, M6, M8, or M10–M48 size range. How to use Ensure mating surfaces are clean and of debris. Place the copper washer between the fastener head and the mating surface. Tighten evenly to form a seal, avoiding overtightening which could deform the washer. Inspect for a uniform seal and if the washer shows deformation or wear. Maintenance and care Inspect washers for dents, cracks, or deformities before use. any washer that is deformed or worn to maintain sealing effectiveness. Store in a dry environment to prevent oxidation before use. This product line is suited for professionals and DIY enthusiasts working on marine meters and instrument installations, offering a reliable copper sealing solution with a consistent, singlespecification set of 20 pieces.