Stopfen — 1 piece Key benefits Provides a reliable seal to close or protect an opening, preventing leaks, contamination, or ingress of dust and moisture. Simple, quick installation and removal for fast maintenance, transport, or temporary closure. Compact, single-piece solution that keeps unused ports or apertures secure without permanent modification. What it does Function: Acts as a stopper/plug to close an opening and protect internal components or fluids. Quantity: 1 stopfen included. Intended use: Temporary or semi-permanent sealing where a matching plug is required. Important attributes to check Compatibility: Designed to be used with the corresponding socket, bore, or port size specified in the product listing — confirm the required diameter and shape before purchase. Size and fit: Size is indicated on the product page; choose the matching size for a proper seal. Material and performance: Material and performance characteristics are shown in the product details — select the variant appropriate for the environmental conditions (e.g., exposure to fluids, temperature, or chemicals). Practical use scenarios Workshop maintenance: Close off hydraulic or pneumatic ports during equipment servicing to prevent fluid loss and contamination. Transport and storage: Plug openings on assemblies or containers to protect internal surfaces and components from dust and moisture while in transit or storage. Temporary sealing during assembly: Use as a non-permanent closure to keep parts clean and dry until final components are fitted. Usage tips Verify the required diameter and shape before insertion to ensure an effective seal. Insert and remove gently to avoid damaging the plug or the receiving port. Replace if the plug shows signs of wear, cracking, or reduced sealing performance. Note Refer to the specific product listing for exact size, material, and compatibility information to ensure this single stopfen meets your application needs.