Silicon Rubber Dust Plug for Msc Connector Rubber Dust Plugs Rubber Sealing Cap for Mc4. Wide Color Customization: Available in Black, White, Clear, Red, Blue, Pink, Green, and other colors. OEM and ODM Service: Supports customization from designs and samples with professional R&D engineers. Multiple Material Options: Made from NBR, NR, EPDM, Silicone, and other rubber materials. Versatile Application: Suitable for USB, RJ45, SFP, DVI, DP, and other electronic ports. High Quality Assurance: Strict inspection by 5 QA/QC inspectors with random visual and function checks. Fast Lead Time: Average production time within 15 workdays for both peak and off-season. Flexible Payment Terms: Accepts LC, T/T, D/P, PayPal, Western Union, and small-amount payments. Low Minimum Order: Low MOQ of 100 pieces allows for flexible bulk purchasing.