FS:2” bulkhead compression coupling nut and seal
 

For sale 4 compression coupling nut and seal (made from teflon nylon)
2 pcs. standard wall thickness
2 pcs. heavy wall thickness
$20/each
This nut eliminate permanent connection of 2” PVC pipe to 2” bulkhead in aquarium or sump
http://i177.photobucket.com/albums/w...s/Standard.jpg
http://i177.photobucket.com/albums/w...arts/Heavy.jpg
http://i177.photobucket.com/albums/w...Comparison.jpg
http://i177.photobucket.com/albums/w...%20parts/4.jpg