Intex pool outlet nozle cover

To make it water tight i used a seal from a 1 inch water piping fitting - do not know the english word so I posted a picture of it. It must be for 1 inch pipe diameter. 

Added 2 more caps and tpu gaskets.  Cover are to screw on the inside of the pool. 

Also Stl file for a tpu gasket.

 If you print make sure you have at least 5 bottom layers in order to make it water tight. Or cut the seal from rummer instead of printing it to cover the complete inside surface of the covers