Patent ID: 6955181

Claim:
A method of making a valve body and seal assembly, the method comprising: providing a liquid elastomer for casting a seal; providing a valve body having a longitudinal axis and comprising: a peripheral seal retention groove spaced apart from said longitudinal axis, said seal retention groove having first and second opposing sides, said opposing sides being separated by a groove width; an impact area of the valve body for contacting a valve seat, said impact area being proximate to said first opposing side; and circular serrations on said first and second opposing sides; and treating said peripheral seal retention groove to render it adhesion-inhibiting for inhibiting adhesion of said elastomer to said groove; providing a mold for containing said liquid elastomer, said mold comprising a mold shell mated with said valve body, said mold comprising said adhesion-inhibiting peripheral seal retention groove; pouring said liquid elastomer into said mold; curing said poured elastomer in said mold; and removing said mold shell.