An oven appliance includes a hinge assembly. The hinge assembly couples a door to slide assemblies such that the door is pivotable. The hinge assembly includes a hinge arm that extends through an opening of the door. The hinge arm has a plurality of rounded edges at the opening of the door. A gasket is mounted to the door at the opening of the door. The gasket extends around the hinge arm and contacts the hinge arm at the rounded edges of the hinge arm.