Pipe Schedule refers to the pipe’s wall thickness but that thickness is also dependent on the size of the pipe.
PVC Schedule 40 in ½” will not have the same wall thickness as PVC Schedule 40 in 6”
1 1/2" PVC Schedule 40 will have a wall thickness of 0.31 inch
1 1/2" PVC Schedule 80 will have a wall thickness of 0.42 inch
I rechecked and it says it is 1-1/2" schedule 40 type 1. I measured using my caliper and the wall is .158" thick and the ID of the pvc tube is 1.60". The tube is 43mm which is approximately 1.7". No biggie, my seals aren't leaking so will just have to get the right piece of PVC.
Mark