Abstract: A laminar structure consisting of at least a first layer (2) formed of a fluoro rubber or a fluoro resin, and a second layer (4) laminated in contact with the first layer and formed of an epichlorohydrin rubber, wherein the improvement comprises; the second layer (4) being formed of a rubber composition which contains 100 parts by weight of an epichlorohydrin rubber material as a base rubber component, 0.1-5 parts by weight of a vulcanizing agent formed of a 2,3-dimercaptoquinoxaline derivative represented by the formula (1), 0.1-5 parts by weight of a salt of 1,8-diazabicyclo(5,4,0)undecene-7 represented by the formula (2), and 1-20 parts by weight of at least one hydrotalcite compound represented by the formula (3), wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represent a same one or respective different ones of a hydrogen atom and an alkyl group having 1-4 carbon atoms, X.sup.- represents an acid radical of carboxylic acid or phenolic resin, M.sub.1.sup.