The ornamental design for a gasketarrangement, as shown and described.
FIG. 1 is a top, left side perspective view of a gasket arrangement;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a front view thereof, the rear view being a mirror image of the front view;
FIG. 5 is a left side view thereof;
FIG. 6 is a right side view thereof; and,
FIG. 7 is a bottom, left side perspective view thereof.
The long dash-short dash lines represent the bounds of the claimed design. The broken lines shown illustrate portions of the gasket arrangement that form no part of the claimed design.