How do I install the Cam Lock Filter Adaptors to my filter box? Holly July 27, 2018 03:49 Updated Follow There are two option when installing the Cam Lock Filter Adaptor: As a semi permanent option you can place teflon tape on the thread of the adaptor before screwing in place. For a permanent option you can glue in the adaptor with PVC glue. Related articles What is the difference between a coarse and fine thread on my Filter? Comments 0 comments Article is closed for comments.