Based on this product's specifications, here are some alternatives and similar models
Sealing kit Rittal AX 2580.121, plastic housing, light grey, pack of 5
Summary description:
Rittal AX 2580.121 is a sealing kit consisting of five light-grey plastic inserts for enclosure cable entries. Designed as housing sealing components, the kit provides protective closures for cable diameters (see manufacturer guidance). Supplied in a pack of 5, it is suitable for industrial enclosures and electrical cabinets to maintain environmental protection and cable routing integrity.