Aluminum sealing washer ACP 8-1/50 /50pcs/ ACP_8-1/50

Bimetallic Washers – Eliminating Galvanic Cells

Bimetallic washers, such as the ACP 8-1/50 model, are a key element in electrical installations connecting copper and aluminum. Their use prevents electrochemical corrosion, which arises from the potential difference between these metals. This translates into reliable and durable connections, minimizing the risk of failures and costly repairs.

Made from a combination of aluminum and copper (CuZn40Pb2 / CW617N), these washers represent an ideal compromise between electrical conductivity and corrosion resistance. They are particularly useful in places exposed to moisture or variable weather conditions.

Design and Application

The ACP 8-1/50 washer has an outer diameter of 17 mm and a thickness of 1 mm, and its inner hole (8.5 mm) is designed for metric screws size 8. This makes it suitable for a wide range of connections used in electrical installations, both in residential and industrial construction. The raw surface finish ensures good electrical contact, and the appropriate selection of materials guarantees long-term protection against corrosion.

The use of bimetallic washers is particularly important when connecting aluminum wires with elements made of copper or its alloys – e.g. busbars, terminals or device housings. They eliminate the formation of galvanic cells, which lead to the gradual decomposition of the material and deterioration of the connection parameters.

Advantages and Benefits

• Protection against corrosion: Prevents the formation of galvanic cells between aluminum and copper, which extends the life of the installation.
• Increased reliability: Stable electrical connections minimize the risk of power outages and equipment failures.
• Versatility: Fits M8 metric screws and is compatible with various types of aluminum-copper connections.
• High-quality materials: Made of copper (CuZn40Pb2) and aluminum, they provide good electrical conductivity and resistance to external factors.
• Simple installation: Facilitates the creation of durable and safe connections in electrical installations.
• Cost optimization: Prevents costly repairs resulting from corrosion and connection failures.