222 without becoming dislodged during operative use fig3 c and 3d are perspective views of a ceramic ferrule stem 210 according to another aspect of the present invention the ferrule stem 210 extends from a first end 201 u2032 to an opposed second end 202 u2032 along the length thereof defining a longitudinal extension axis central axis of the ferrule stem 210 a substantially cylindrical central bore 203 u2032 having a substantially cylindrical inner diameter id extends along the length of the ferrule stem 210 from a circular opening at the first end 201 u2032 to a circular opening at the second end 202 u2032 thereof a first annular flange 211 u2032 is provided circumscribing the outer diameter od of the ferrule stem 210 and spaced a distance away from the second end 202 u2032 and a second annular flange 212 u2032 is provided circumscribing the outer diameter od of the ferrule stem 210 proximate and defining the second end 202 u2032 of the ferrule stem 210 the outer diameter of the second flange 212 u2032 is greater than the outer diameter of the first flange 211 u2032 and the outer diameter of the first flange 211 u2032 is greater than the od of the ferrule stem 210 like with the embodiment described in connection with fig3 a and 3b preferably the outer diameter of the first flange 211 u2032 of the ferrule stem 210 is 1 5 inches the outer diameter of the second flange 212 u2032 is 1 3 inches and the od of the ferrule stem 210 is 1 1 inches it is also preferred that the first flange 211 u2032 is spaced a distance of 1 0 inch more preferably 0 250 inches from the second.