PART NO. THREAD O-RING DIMENSIONS E F F A B S1 S2 1SG9-02OG G1/8"X28 G1/8"X28 7.65X1.78 21.8 26.2 11 14 1SG9-04OG G1/4"X19 G1/4"X19 10.77X2.62 26.3 31.3 14 19 1SG9-06OG G3/8"X19 G3/8"X19 13.94X2.62 29 35.8 16 22 1SG9-08OG G1/2"X14 G1/2"X14 17.12X2.62 37 43.2 22 27 1SG9-12OG G3/4"X14 G3/4"X14 23.47X2.62 41.5 49.3 27 32 1SG9-16OG G1"X11 G1"X11 29.74X3.53 47.5 53 33 41 1SG9-20OG G1.1/4"X11 G1.1/4"X11 37.69X3.53 57 58 41 50 1SG9-24OG G1.1/2"X11 G1.1/2"X11 44.04X3.53 61 63 48 55