An electronic device that includes a deformable feature designed to seal two or more parts of the electronic device is disclosed. The deformable feature may be designed to deform, in response to a force applied to the deformable feature, with little or no compression. The deformable feature may include a cavity or relief volume extending along the deformable feature to define a space or void in the deformable feature. In response to a force, the deformable feature may deform such that a material (or materials) defining the deformable feature occupies or extends into the space or void, or in a location previously occupied by the space or void. The deformable feature may provide a protective seal between two or more parts that prevents ingress of contaminants, such as a liquid.