Patent ID: 8262094

Claim:
A system for sealing a space between an inner wall of a tubular opening and at least one tube or duct at least partly received in the opening such that a longitudinal direction of the opening and a longitudinal direction of the at least one tube or duct are substantially parallel to each other, the system comprising: at least two segmental longitudinal parts for forming a sealing plug which can be received in said space, each of the longitudinal parts being of an elastically deformable material and provided with an outside which comprises a number of outer ribs spaced apart in a longitudinal direction for realizing, in use, annular contact surfaces which are each closed in itself in a circumferential direction between the sealing plug and the inner wall of the opening, each of the longitudinal parts is being provided with an inside comprising a number of inner ribs for realizing, in use, annular contact surfaces which are each closed in itself in a circumferential direction between the sealing plug and the at least one tube or duct, each of the outer ribs being longer in transverse direction than any of the inner ribs, each of the inner ribs being provided with an abutting surface that extends in the longitudinal direction and that in use abuts one of the at least one tube or duct, each inner rib on either side of the abutting surface further being provided with a sloped surface which extends away from the abutting surface, the slope of each sloped surface disposed at an angle with respect to a direction transverse to the longitudinal direction of the segmental longitudinal part such that bending of each inner rib is substantially inhibited when the longitudinal parts are inserted in the said space, the inner ribs being directly adjacent each other in the longitudinal direction such that the slope of the sloped surface extends away from the abutting surface up to a point where it meets a sloped surface of an adjacent inner rib, wherein a transverse plane intersects both a position between two directly adjacent inner ribs and a middle region of one of the outer ribs.