NOVELTY - The sealant has two portions in which portion (A) comprises initiator and portion (B) comprises polymerizable material. The portion (A) of the sealant is applied to a substrate of a fuel cell component (A) and portion (B) of the sealant is applied to substrate of a fuel cell component (B). The substrates of fuel cell components (A,B) is juxtaposingly aligned, and the sealant is bonded to the fuel cell components (A,B) by curing, to obtain fuel cell component.    USE - Manufacture of fuel cell component used for direct methanol fuel cell, proton exchange membrane fuel cell and electrochemical fuel cell such as phosphoric acid fuel cell, alkaline fuel cell, solid oxide fuel cell and molten carbonate fuel cell used for electrochemical devices.    ADVANTAGE - The method effectively provides stable fuel cell component having favorable electrical characteristics.    DETAILED DESCRIPTION - The sealant has two portions in which portion (A) comprises initiator and portion (B) comprises polymerizable material. The portion (A) of the sealant is applied to a substrate of a fuel cell component (A) and portion (B) of the sealant is applied to substrate of a fuel cell component (B). The substrates of fuel cell components (A,B) are juxtaposingly aligned, and the sealant is bonded to the fuel cell components (A,B) by curing, to obtain fuel cell component. The sealant is cured by actinic radiation initiator and the initiator is an actinic radiation initiator. The polymerizable material is chosen from the group containing polymerizable monomer, oligomer, telechelic polymer, functional polymer and their combinations. The functional group of polymerizable material is chosen from the group containing epoxy, allyl, vinyl, acrylate, methacrylate, imide, amide, urethane and their combinations. An INDEPENDENT CLAIM is also included for the system for forming fuel cell component.    DESCRIPTION OF DRAWING(S) - The drawing shows cross-sectional view of fuel cell.    Fuel cell (10)    Separator plates (12,28)    Gas diffusion layers (18,26)    Anode catalyst (20)    Proton exchange membrane (22)    Cathode catalyst (24)    Anode (34)    Cathode (38)