How do I install the Cam Lock Filter Adaptors in my filter box? Holly June 13, 2018 05:51 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 My filter has a handle at the top, does the replacement filter need a handle? Comments 0 comments Article is closed for comments.