New bowl seal kit for the HCM 450/300. Made from strong, food grade plastic. Includes food grade lubricant for installation. This is the thin style, single V-Seal bowl seal used on some HCM's. To determine if this bowl seal will fit your HCM, measure the thickness of your OEM bowl seal (see image). The plastic body of this bowl seal measures 5/16" of an inch thick. This seal is only used with HCM's that have a seal plate installed on the bottom of the bowl. Please see image.