Hi Steve,
Yes, but if you look at their selection guide here:
http://www.ipscorp.com/ind_html/selectind.html
You can see that they don't recommend 16 for PVC rigid to PVC rigid. I only use 16 on acrylic and PVC glue on PVC.
However, if your pipe is not under too much pressure and it works for you, then, it's probably ok. But just something to keep in mind next time.
Thanks.
Bongy