Patent ID: 7754132

Claim:
A method of making a spool seal having a top surface, a bottom surface, an inner diameter surface, an outer diameter surface, and a middle cross-section at said inner and outer diameter surfaces; said method comprising: providing a mold comprising separable first and second mold halves which join when closed to form a parting line and a cavity therein; wherein said first mold half is adapted to form the outer diameter surface of the spool seal to be molded therein and said second mold half is adapted to form the inner diameter surface of the spool seal to be molded therein; closing said first and second mold halves such that the parting line formed by said closed mold halves is positioned at the top or bottom surface of said spool seal to be molded therein; introducing a moldable material into the cavity defined by the closed mold halves; and curing said moldable material to form said spool seal; wherein said molded spool seal has an annular ring shape, a smooth sealing surface at said middle cross-section of said inner and outer diameter surfaces, a flat top surface, and a flat bottom surface.