Abstract: A tapping sleeve assembly comprising a sleeve configured to clamp a main conduit, a gasket between the sleeve and main conduit, the gasket having a protruding aperture seal offset a distance from a branch aperture in the sleeve, the aperture seal having a first inwardly protruding portion extending substantially parallel to the longitudinal axis of the main conduit, an inwardly protruding circumferential seal bead extending substantially transverse to the longitudinal axis from the first portion of the aperture seal, the seal bead having a main length portion having a thickness less than the thickness of the first portion of the aperture seal, the seal bead having a junction end portion between the main length portion and the first portion of the aperture seal, the junction end portion having a non-uniform thickness, the aperture seal having a non-uniform thickness, and the offset distance being non-uniform.

Abstract: A tapping sleeve assembly comprising a sleeve (15) configured to clamp a main fluid conduit (16) oriented about a longitudinal axis (x-x), the sleeve having a first member (34), a second member (40) separate from the first member, and a connecting assembly (21) between the first member and the second member, the first member having a branch aperture (23) configured to communicate with a branch fluid conduit (29), the connection assembly configured and arranged to tighten the first and the second members to the main fluid conduit, a gasket (32) disposed between the first member and the main fluid conduit, the gasket having a protruding aperture seal (22) configured to extend around the branch aperture between the sleeve and the main fluid conduit and to be offset a distance (57) from the branch aperture, the aperture seal having a first inwardly protruding portion (35) extending substantially parallel to the longitudinal axis and having a thickness (53), at least one inwardly protruding circumferential seal be