NorComp D-Sub Connector Sealing Flanges Sealing flanges for use with D-sub connectors which eliminate the need for secondary potting operations when sealing the connector to the panel. These D-sub connector sealing flanges are made from UL94-HB silicone rubber and are either removable or permanent. Part numbers SF67XX are removable, part numbers SFP67SSXX are permanent with adhesive on one side and part numbers SFP67XX have adhesive on both sides. These D-sub connector sealing flanges are available in standard sizes of 9, 15 and 25 positions