Plumbing Frostex Plug KitPlumbing Frostex Plug Kit . all outside the usa purchases duties, taxes and fees any applicable Clearance Entry Fees (CEF) and other import fees. are the buyers reasonability The Frostex 9800 FlexFit Plug Kit is designed to work with Raychem Frostex heating cable. This kit includes a ground fault plug as well as an end seal that seals the cable end that does not plug in. The 9800 FlexFit Plug Kit is required for any heating cable circuit, so it will