Prevent leaks around your pool return fittings and protect wall panels from corrosion with a fresh set of compression gaskets. Designed to sandwich vinyl liners or fiberglass walls, one gasket installs on the inside pool wall behind the fitting faceplate while the second sits on the outside wall face against the locknut. Over time, chemical degradation and wall flexing cause original fiber gaskets to thin, weep, or decay, making this 2-pack essential for leak-free return fitting maintenance.