To prevent dirt fluid from leaking from a toilet device and improve work efficiency in manufacturing the toilet device.

A seal mechanism sealing a gap between a toilet main body 1 and a partition mechanism has a primary seal member 92 that is nearly-ring shaped and has an inner diameter smaller than an outer diameter of a lower opening part 1e of the toilet main body 1. The primary seal member 92 has its outer peripheral part fixed and its inner peripheral part curved toward the partition mechanism and goes around and elastically contact with the lower opening part 1e. This causes the primary seal member 92 to tighten the lower opening part 1e, allowing the toilet main body 1 and partition mechanism to seal. This makes it possible to prevent dirt fluid from leaking from the gap between the toilet main body 1 and the partition mechanism. In addition, since the toilet device does not use a conventional liquid adhesive sealant that requires time to dry, work efficiency is improved in manufacturing the toilet device.