Mansfield Genuine Biscuit Elongated Plastic Toilet Seat MPP120 The hard plastic flapper is

The hard plastic flapper is not replaceable

and instructions

Right Hand Thread Graphite Packing (Small Thick Packing)

Other part numbers for this flapper are 6300207

The stem is measured how it is shown in the image

Mansfield Genuine Biscuit Elongated Plastic Toilet Seat MPP120 The hard plastic flapper isPLEASE NOTE THAT TOILET SEATS ARE NOT RETURNABLE FOR ANY REASON DUE TO HEALTH CONCERNS. Please make sure you are choosing the correct seat before ordering. Mansfield Genuine biscuit color SB200 elongated toilet seat. This seat comes with two bolts, and two nuts to attach the seat to the bowl. Seat comes in White, Biscuit, and Bone (Tan).