Black Water Tank Seal
This gasket is a direct replacement for the 4" Cherne "Original", End of Pipe Gripper Mechanical Plug seal that serves as the blackwater tank stopper on Prevost Class A Motorcoaches. Saves you money by reusing the existing plastic and metal parts. Other places you may find this seal is with drain, water, and vent applications.
No need to buy the entire kit – replace the seal with one made of higher quality EPDM rubber.
Inner Width: 2-9/16"
Outer Width: 3-3/4"