The ornamental design for a restrainedgasket, as shown and described herein.
FIG. 1 is a front perspective view of a first side of the restrained gasket,
FIG. 2 is a front perspective view a second side of the restrained gasket,
FIG. 3 is a rear perspective view of the second side of the restrained gasket,
FIG. 4 is a rear perspective view of the first side of the restrained gasket,
FIG. 5 is a sectional view taken along line 5-5 of FIG. 1; and,
FIG. 6 is an enlarged detail portion view taken from FIG. 5.
The broken lines shown in the drawings are for the purpose of illustrating portions of the restrained gasket that form no part of the claim. The dot dash broken line indicates cutoff boundaries for the enlarged detail portion views that form no part of the claim.