Mold method and apparatus

Details Mold method and apparatus Mold method and apparatus

B - Operations, Transporting

29

D

18/109

B29D 99/00 (2010.01) B29C 45/14 (2006.01)

Patent

CA 1080414

MOLD METHOD AND APPARATUS ABSTRACT OF THE DISCLOSURE A seal of the type having a metal shell with a cylindrical flange and with an elastomeric layer bonded to each of the inside and outside diameter surfaces thereof, is transfer molded by positioning the cylindrical flange of the shell in a seal-forming cavity of the transfer mold such that it is directly axially in-line with the sprue holes of the mold, whereby the flow of elastomer into the cavity is split by the cylindrical flange into two streams, one adjacent the inside diameter and one adjacent the out- side diameter of the cylindrical flange such that the fluid pressure against the cylindrical flange is equalized and distortion of the shell is substantially reduced or elimin- ated.

267616

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