PART NO. THREAD O-RING DIMENSIONS E F F A B L S1 1BE-04-14 G1/4"X19 M14X1.5 10X1.9 12 11 29 19 1BE-04-16 G1/4"X19 M16X1.5 11X1.9 12 11 29 19 1BE-06-16 G3/8"X19 M16X1.5 11X1.9 13.5 11 32.5 22 1BE-32-52 G2"X11 M52X2 40X3.1 25.5 22 64.5 70 Note:The parameter of F end O-Ring is ring outside diameter and ring width.