Based on this product's specifications, here are some alternatives and similar models
Toilet Pan Connector McAlpine WCECON1 260 mm flexible WC connection
Summary description:
McAlpine WCECON1 is a toilet pan connector with a 260 mm nominal length designed for connecting a close-coupled or floor-mounted WC to the soil pipe. The flexible connector provides a sealed joint between the pan outlet and waste pipe, accommodating minor misalignment and movement. Suitable for domestic and light commercial sanitary installations where a reliable WC connection is required.