Abstract: A gasket assembly having improved compression stoppers. The stoppers facilitate the rapid, easy and certain securance of the stoppers in a predetermined relationship in a gasket assembly. A gasket assembly, in accordance with this invention desirably comprises a main body having a pair of side sections, each comprising a self supporting core member and compressible facings fast with the core member and defining fastener openings through which fasteners are adapted to pass. The core members extend along the side sections of the gasket assembly, said facings and said core providing side sections of a first thickness. The main body further comprises end portions joining the side sections. Separate compression stoppers are provided in the fastener openings.