Hydrostatic lead seal and method of making same

Claim 1

4. A SEAL FOR SELLING ELECTRICAL CONDUCTORS IN A WALL OF A SHELL SUBJECTED TO INTERNAL COMPRISING AN INSULATED CURRENT CONDUCTIVE MEMBER EXTENDING THROUGH A WALL OF SAID SHELL A SEAL IN INTIMATE CONTACT WITH SAID CONDUCTIVE MEMBER AND THE WALL OF SAID SHELL FOR PREVENTING ESCAPE OF THE HIGH PRESSURE FLUID TO THE ATMOSPHERE, SAID SEAL COMPRISING A BASE LAYER OF INSULATION ON SAID MEMBER MADE FROM A HYDROCARBON POLYMER HAVING A MELTING POINT IN EXCESS OF 80*C. AND WHICH IS HYDROLYTICALLLY AND THERMALLY STABLE, A FILLED RESINOUS THERMOSET MATERIAL CAPABLE OF WITHSTANDING PRESSURES GREATER THAM 500 P.S.I., PLACED IN INTIMATE CONTACT WITH SAID BASE LAYER OF INSULATION, AN OUTER LAYER OF INSULATED OVER SAID RESINOUS MATERIAL HAVING THE SAME CHARACTERISTICS AS THE MATERIALS IN SAID BASE LAYER OF INSULATION, AND A SUPPORTING MEMBER SURROUNDING SAID CONDUCTIVE MEMBER AND ATTACHED TO SAID SHELL FOR RESISTING FORCES TENDING TO DISPLACE SAID SEAL FROM SAID HOUSING.