PART NO. THREAD O-RING DIMENSIONS E F F A B L S1 1SG-02 G1/8"X28 G1/8"X28 7.65X1.78 12 9.5 27.5 14 1SG-04 G1/4"X19 G1/4"X19 10.77X2.62 14 10 30 19 1SG-06 G3/8"X19 G3/8"X19 13.94X2.62 16 11.5 35.5 22 1SG-08 G1/2"X14 G1/2"X14 17.12X2.62 19 14 43 27 1SG-12 G3/4"X14 G3/4"X14 23.47X2.62 21 15.5 47.5 32 1SG-16 G1"X11 G1"X11 29.74X3.53 23 18 54 41 1SG-20 G1.1/4"X11 G1.1/4"X11 37.69X3.53 27 20 62 50 1SG-24 G1.1/2"X11 G1.1/2"X11 44.04X3.53 27 21.5 63.5 55