an electrosurgical device is provided having at least one elastomeric seal capable of providing bio - contamination and dielectric protection by inhibiting the ingress of fluids and contaminants through the nose and actuator areas . the elastomeric seal is manufactured from a thermoplastic elastomer or resin which while in liquid form is placed within a mold . a housing section having the main circuit components and mechanisms of the electrosurgical device is then placed within the mold . once the elastomer cures , the elastomeric seal seals the components and mechanisms within the housing partial - section . the elastomeric seal defines a flexible first opening at a distal end of the electrosurgical device to accommodate varying diameters of electrodes or blades connected to the nose area of the electrosurgical device . an actuator seal is also provided on the actuator area of the electrosurgical device to prevent fluids and contaminants from entering the electrosurgical device through the actuator area . two buttons are insert molded within the actuator seal and are operatively associated with a self - cleaning switching mechanism within the housing section to operate the electrosurgical device between a cutting and coagulating mode . the actuator seal is also manufactured from a thermoplastic elastomer or resin .