two sections of pipeline which are connected in end to end relation alternatively such flanges may be those used to connect monitoring equipment to the flow line accordingly such a flange connection will be introduced in reference to the end to end connection of a pair of pipeline sections but it should be clearly understood that the present invention is not limited to such applications thus for example as is illustrated in fig1 an isolation gasket 10 is located in a flange connection 12 between two pipe sections 14 in a flow line application each of the pipe sections 14 includes flanges 16 which may be placed in confronting relationship with gasket 10 therebetween flanges 16 are provided with bores 20 which align with one another so that flanges 16 may be connected by nut and bolt sets 18 as is known in the art with continued reference to fig1 and with reference to fig2 it may be seen that electrical isolation between flanges 16 is accomplished by a plurality of different components associated with each aligned pair of bores 20 here a pair of aligned bores 20 is provided with a sleeve 22 constructed for example of a glass reinforced polymer although other materials such as epoxy phenolic and nomex materials may be suitably employed sleeve 22 is dimensioned to have a length that is about the same as the distance between outer surfaces.