Abstract: A kit of gaskets comprises at least one piece (10) of gasket forming material, preferably of the "dry joint" grade, which piece includes gasket parts (1) and packaging parts (2). Cuts (4) separate the gasket parts (1) from the packaging parts (2). The cuts (4) do not extend around the gasket peripheries but terminate so as to define interconnecting regions (6). At least two of the gasket parts may define segments (14, 16) each having a dovetail projection (12) or recess (14) adapted for engagement with one another. The bolt holes are formed by removing the pips of material from the piece.