Pipe joint and a gasket therefor

A gasket 17 for a demountable pipe joint 1 of an hygienic food processing system, the gasket 17 comprising a first part 19 defining a surface 27 for providing a smooth transition from a first pipe end 3 to a second pipe end 5 at a pipe joint 1, the sides of the gasket 17 each defining a plateau 25 adjacent the surface 27 for abutting the pipe ends 3, 5, in use, to produce an hygienic seal, wherein the first part 19 of the gasket 17 is made from a plastics material having sufficient structural strength when not fully supported to withstand pressures within the pipes 3, 5, during use, without damaging or separating from the pipe ends. Such a gasket has been found to be extremely efficient and appropriate in hygienic food processing systems, which in the past have relied heavily on elastomeric gaskets.