Product: Stopfen (plug) What it is A stopfen (plug) designed to terminate or protect a connector opening while providing a reliable conductive contact and insulated shell. Key materials and why they matter Contact material: copper alloy — provides reliable electrical conductivity, good mechanical strength for repeated insertions, and resistance to corrosion in typical electrical applications. Shell material: Nylon PA66 — a durable, impact‑resistant, and dimensionally stable thermoplastic that provides electrical insulation and mechanical protection for the contact. Benefits — why you need it Protects unused or exposed connector openings from dust, moisture and mechanical damage. Ensures a stable electrical contact where a conductive plug is required, thanks to the copper alloy contact. Provides insulated, tough housing that withstands handling and installation stresses, reducing downtime from connector damage. Function and compatibility Function: plugs and protects connector ports or housings while providing an integrated contact element. Compatibility: intended for use where a stopfen with a copper alloy contact and a Nylon PA66 shell matches the connector geometry and interface. Use as a direct replacement for equivalent stopfen components made from the same materials. Performance highlights Reliable contact conductivity from the copper alloy element. Durable insulation and mechanical protection from Nylon PA66. Suitable for repeated insertion/removal in general electrical and electronic assemblies. Typical applications Industrial control panels: seal unused connector openings and protect contacts in factory environments. Electrical equipment and enclosures: terminate spare ports and prevent contamination or shorting. Automotive or low-voltage electronics assemblies: provide an insulated conductive plug where a matching stopfen is required. Ordering note Verify physical dimensions and connector interface compatibility with your device or assembly to ensure correct fit before installation.