Abstract: The invention relates to a plastic closure cover especially suited for the closing of an opening in a motor vehicle body panel. The closure cover comprises a bottom wall 2, which is joined with a circumferentially extending elastically deformable flange 3 arranged to overlap the edge of the upper side of the panel opening. A catch ring 4 is formed on the bottom part 2 and extends diagonally outward and upward to press against the lower side of the opening. According to the invention, there is arranged, in each case, on the end of the flange 3 and of the catch ring 4, a flexible sealing lip 5, 6 for pressing against the edge zone of the opening.

Abstract: The invention relates to a line holder device 1 formed of plastic and especially suited for holding and supporting pipelines. The holder 1 includes a fastening zone 2 for fastening to a support, with at least one holding zone 3, 4 for the stopped support of a pipeline. A locking element 5 is provided for securing the pipeline in the holding zone. The holding zone or zones 3,4 are wedged in a closed position by the locking element 5, designed as a wedge clamp 6. The wedge clamp has a number of closing elements 9 to 18, which strike against the holding zone 3,4 and/or the fastening zone 2, on the inside and/or the outside.

Abstract: A sealing ring for a piston moving within a cylinder made up of an elastomeric part and a stiff support part, the ring being x-shaped in cross section, two legs of the elastomeric part, of the same radius, constituting the dynamic seal and a third leg constituting the static seal. The fourth leg is made up by the support part and projects radially beyond the third leg so as to lock into a corresponding recess is the piston or cylinder. An indentation about the circumference of the fourth leg facilitates its resilient flexing to make the initial lock. Advantageously the axial body of the seal between the legs is substantially cylindrical.