The Spelsberg 20302501 Plug is a black plastic plug designed for sealing M25 openings. Manufactured by Spelsberg, it is suitable for protecting electrical enclosures from dust and moisture. This plug is typically used in industrial and commercial electrical installations. https://elecena.pl/product/28154894/spelsberg-20302501-plug-m25-plastic-black-1pc-closed-sealing-membrane 2025-03-31 https://elecena.pl/product/28154894/spelsberg-20302501-plug-m25-plastic-black-1pc-closed-sealing-membrane 2025-08-01