The ILME CKR-65D is a gasket & screw sealing kit for the CD-07 and CD-08 series size 21.21 inserts. Used to reach IP 66/67/69 protection. When this sealing kit is used, the original screw and washer that came with the insert may be discarded. The CKR-65D features a longer screw than the one that comes with the insert. The screw is also longer than the CKR-65 version. Screw is stainless steel and the gasket is thermoplastic.