This part is a Wall Fitting Flange, Waterway, Poly Jet, 3-1/8" face diameter, 2-5/8" hole size, White..
I use Silicone to seal it not a gasket.. Click here for links to Silicone.. Silicon Medium Tube 2.8oz Special Hot Tub Repair Formula for Sealing Fittings to the Shell
For the tool used to installing this flange Click this Link: Jet Flange Wrench Tool, Waterway Poly Jet
Jet Part Type Wall Fitting
Manufacturer Waterway
Model Poly Jet
Hole Size 2-5/8"
Face Diameter 3-1/8"
Base Diameter 2-1/2" w/Threads
Total Length 1-3/8"
Face Style Smooth
Color White
Special Feature Four Notches on Face
