(ZA9610814-A)      A method of fabricating an electrochemical or galvanic cell, comprising electrochemical components joined together in a stack, comprises: (i) providing a first component (1) formed from a deformable polymeric material with continuous groove(s) (2), comprising a female opening having a width (w) and a depth (h); (ii) providing a second component (3) with continuous upstand(s) (4), having a width &gt;w and a height &lt;h; (iii) pressing the first and second components together to give an integral seal between the upstand on the second component and the opening in the first component, with the seal between the parts obtained by sealing engagement of the sides of the upstand with the sides of the opening; and (iv) joining the first and second components together to form a stack.    Preferably, the first component is made from polyethylene, polypropylene, copolymers of polyethylene and polypropylene, acetal, nylon, PET, polyvinylidene fluoride, PVC, PTFE, fluorinated ethylene-propylene copolymer, polyfluoroamide, or chlorinated polyoxymethylene. The second component is made from filled grades of the materials from which the first component may be made, or polystyrene, PMMA or polycarbonate.    Also claimed are a secondary battery, fuel cell or electrolyser fabricated by the above method.    ADVANTAGE -   The cell is manufactured relatively easily to the required tolerances with the minimum of equipment and process steps. The seal can be used to join components made from different polymeric materials, including those which are incompatible to the welding techniques of prior art. The components may be disassembled to trace and repair faults not necessarily with respect to the sealing mechanisms but may be, e.g., faults in the membrane or electrode.    (EP870342-A1)      A method of fabricating an electrochemical or galvanic cell, comprising electrochemical components joined together in a stack, comprises: (i) providing a first component (1) formed from a deformable polymeric material with continuous groove(s) (2), comprising a female opening having a width (w) and a depth (h); (ii) providing a second component (3) with continuous upstand(s) (4), having a width &gt;w and a height &lt;h; (iii) pressing the first and second components together to give an integral seal between the upstand on the second component and the opening in the first component, with the seal between the parts obtained by sealing engagement of the sides of the upstand with the sides of the opening; and (iv) joining the first and second components together to form a stack.    Preferably, the first component is made from polyethylene, polypropylene, copolymers of polyethylene and polypropylene, acetal, nylon, PET, polyvinylidene fluoride, PVC, PTFE, fluorinated ethylene-propylene copolymer, polyfluoroamide, or chlorinated polyoxymethylene. The second component is made from filled grades of the materials from which the first component may be made, or polystyrene, PMMA or polycarbonate.    Also claimed are a secondary battery, fuel cell or electrolyser fabricated by the above method.    ADVANTAGE -   The cell is manufactured relatively easily to the required tolerances with the minimum of equipment and process steps. The seal can be used to join components made from different polymeric materials, including those which are incompatible to the welding techniques of prior art. The components may be disassembled to trace and repair faults not necessarily with respect to the sealing mechanisms but may be, e.g., faults in the membrane or electrode.    (TW347599-A)      A method of fabricating an electrochemical or galvanic cell comprising a plurality of electrochemical components, which electrochemical components are joined together in a stack, which method comprises: (i) providing a first component formed from a deformable polymeric material with at least one substantially continuous groove comprising a female opening having a width of W and a depth of h; (ii) providing a second component with at least one substantially continuous upstand having a width of &gt;w and a height of &lt;h; (iii) pressing the first and second components together in order to provide an integral seal between the upstand on the second component and the opening in the first component, with the seal between the parts being provided by sealing engagement of the sides of the upstand with the sides of the opening; and (iv) joining a plurality of first and second components together to form a stack.    (JP11514132-W)      A method of fabricating an electrochemical or galvanic cell, comprising electrochemical components joined together in a stack, comprises: (i) providing a first component (1) formed from a deformable polymeric material with continuous groove(s) (2), comprising a female opening having a width (w) and a depth (h); (ii) providing a second component (3) with continuous upstand(s) (4), having a width &gt;w and a height &lt;h; (iii) pressing the first and second components together to give an integral seal between the upstand on the second component and the opening in the first component, with the seal between the parts obtained by sealing engagement of the sides of the upstand with the sides of the opening; and (iv) joining the first and second components together to form a stack.    Preferably, the first component is made from polyethylene, polypropylene, copolymers of polyethylene and polypropylene, acetal, nylon, PET, polyvinylidene fluoride, PVC, PTFE, fluorinated ethylene-propylene copolymer, polyfluoroamide, or chlorinated polyoxymethylene. The second component is made from filled grades of the materials from which the first component may be made, or polystyrene, PMMA or polycarbonate.    Also claimed are a secondary battery, fuel cell or electrolyser fabricated by the above method.    ADVANTAGE -   The cell is manufactured relatively easily to the required tolerances with the minimum of equipment and process steps. The seal can be used to join components made from different polymeric materials, including those which are incompatible to the welding techniques of prior art. The components may be disassembled to trace and repair faults not necessarily with respect to the sealing mechanisms but may be, e.g., faults in the membrane or electrode.    (US6086643-A)      A method of fabricating an electrochemical or galvanic cell, comprising electrochemical components joined together in a stack, comprises: (i) providing a first component (1) formed from a deformable polymeric material with continuous groove(s) (2), comprising a female opening having a width (w) and a depth (h); (ii) providing a second component (3) with continuous upstand(s) (4), having a width &gt;w and a height &lt;h; (iii) pressing the first and second components together to give an integral seal between the upstand on the second component and the opening in the first component, with the seal between the parts obtained by sealing engagement of the sides of the upstand with the sides of the opening; and (iv) joining the first and second components together to form a stack.    Preferably, the first component is made from polyethylene, polypropylene, copolymers of polyethylene and polypropylene, acetal, nylon, PET, polyvinylidene fluoride, PVC, PTFE, fluorinated ethylene-propylene copolymer, polyfluoroamide, or chlorinated polyoxymethylene. The second component is made from filled grades of the materials from which the first component may be made, or polystyrene, PMMA or polycarbonate.    Also claimed are a secondary battery, fuel cell or electrolyser fabricated by the above method.    ADVANTAGE -   The cell is manufactured relatively easily to the required tolerances with the minimum of equipment and process steps. The seal can be used to join components made from different polymeric materials, including those which are incompatible to the welding techniques of prior art. The components may be disassembled to trace and repair faults not necessarily with respect to the sealing mechanisms but may be, e.g., faults in the membrane or electrode.