Custom Rubber Silicone Molds, to shield things from edges and corners that are too sharp, use custom rubber grommets. Additionally, it may be press-fit into such an application without the use of glue or any other extra fasteners thanks to intrinsic features like flared as well as collared on either side. Flat rubber plugs that seal out gaps on surfaces or even in objects are referred to as car body plugs. The automotive rubber hole plugs snaps into place after being externally forced into the hole. A consistent aperture is required so that the automobile body plug may be put into it without any gaps.