e g 12 14 16 and so forth sealed against each other via abutting sealing members thereby forming a sealed tunnel or pipe section fig2 further illustrates a first sealing member 22 of the invention mounted onto a tunnel segment 12 and a second sealing member 24 mounted onto an adjacent tunnel segment 14 the sealing members 22 and 24 are brought into facing relation and engage each other when the tunnel segments 12 and 14 are assembled typically the tunnel segments are conjoined or secured to each other using bolts or other fasteners resulting in compression of the sealing members and thus producing a compression seal therebetween referring now to fig3 there is shown a cross sectional view of a sealing member 22 in accordance with a first embodiment of the present invention seal 22 includes integral first and second portions 30 and 32 respectively although the seals of the present invention are described herein as comprising first and second portions this distinction is made only for ease of exposition it will be recognized that the subject sealing members are integrally formed and the terms u201c first portion u201d and u201c second portion u201d as used herein are not intended to preclude overlap between the two regions particularly where hollow regions in one portion are staggered or laterally offset with respect to hollow regions in the other portion first portion 30 includes a sealing layer 36 having a generally planar sealing surface 34.