PART NO. THREAD O-RING DIMENSIONS E F E A B S1 S2 2GB4-02OG G1/8"X28 G1/8"X28 7.65X1.78 24 5.5 11 14 2GB4-04-02OG G1/4"X19 G1/8"X28 10.77X2.62 27 5.5 14 14 2GB4-04-06OG G1/4"X19 G3/8"X19 10.77X2.62 27 6.3 14 22 2GB4-06OG G3/8"X19 G3/8"X19 13.94X2.62 30 6.3 16 22 2GB4-06-04OG G3/8"X19 G1/4"X19 13.94X2.62 30 5.5 16 19 2GB4-06-08OG G3/8"X19 G1/2"X14 13.94X2.62 31 7.5 19 27 2GB4-08OG G1/2"X14 G1/2"X14 17.12X2.62 36 7.5 22 27 2GB4-08-06OG G1/2"X14 G3/8"X19 17.12X2.62 36 6.3 22 22 2GB4-08-10OG G1/2"X14 G5/8"X14 17.12X2.62 36 9.5 22 30 2GB4-08-12OG G1/2"X14 G3/4"X14 17.12X2.62 36.5 10.9 24 32 2GB4-12OG G3/4"X14 G3/4"X14 23.47X2.62 42 10.9 27 32 2GB4-12-08OG G3/4"X14 G1/2"X14 23.47X2.62 42 7.5 27 27 2GB4-12-16OG G3/4"X14 G1"X11 23.47X2.62 42.8 11.7 30 41 2GB4-16OG G1"X11 G1"X11 29.74X3.53 44 11.7 33 41 2GB4-16-12OG G1"X11 G3/4"X14 29.74X3.53 44 10.9 33 32 2GB4-20OG G1.1/4"X11 G1.1/4"X11 37.69X3.53 47.5 11 41 50 2GB4-20-16OG G1.1/4"X11 G1"X11 37.69X3.53 47.5 11.7 41 41 2GB4-24OG G1.1/2"X11 G1.1/2"X11 44.04X3.53 51.5 13 48 55