Based on this product's specifications, here are some alternatives and similar models
Lapp Skindicht O-Ring Viton Gasket for M20 x 2 Cable Gland
Summary description:
The Lapp Skindicht O-Ring Viton is a high-quality sealing ring designed for M20 x 2 cable glands. Made from durable Viton material, this gasket provides excellent resistance to chemicals, oils, and high temperatures, ensuring a reliable and tight seal in demanding industrial environments. It is an essential component for maintaining the integrity and protection class of cable entry systems.