The Thetford 31708 is a replacement blade seal designed for Aqua Magic V permanent

The Thetford 31708 is a replacement blade seal designed for Aqua Magic V permanent toilets only.
Compatible with high and low profile, hand or foot pedal models.
Figure 9 in assembly (pictured above).
For a complete list of all Aqua Magic V repair parts, see below.
Includes (1) blade seal, and instructions.
Limited 1-Year Manufacturer Warranty.