Based on this product's specifications, here are some alternatives and similar models
Gel-filled cable joint enclosure RAYTECH BARNEY-Y MUFA ROZGAŁĘŹNA IP68
Summary description:
RAYTECH BARNEY-Y MUFA ROZGAŁĘŹNA is a gel-filled cable joint enclosure designed for branching and protecting electrical cable connections. With IP68 protection, the unit provides long-term sealing against water and dust for underground or outdoor installations. It is suitable for insulating, mechanically protecting and electrically isolating cable splices in distribution and service networks.