PART NO. THREAD O-RING DIMENSIONS E F F A B S1 S2 1TO9-04OG/SP R1/4"X19 7/16"X20 8.92X1.83 26 31 14 17 1TO9-04-06OG/SP R1/4"X19 9/16"X18 11.89X1.98 26 31.8 14 19 1TO9-06OG/SP R3/8"X19 9/16"X18 11.89X1.98 28.5 33.3 16 19 1TO9-06-08OG/SP R3/8"X19 3/4"X16 16.36X2.21 31 37 19 24 1TO9-06-10OG/SP R3/8"X19 7/8"X14 19.18X2.46 33.5 44 22 27 1TO9-08OG/SP R1/2"X14 3/4"X16 16.36X2.21 37 40.5 22 24 1TO9-08-10OG/SP R1/2"X14 7/8"X14 19.18X2.46 38 44 22 27 1TO9-08-12OG/SP R1/2"X14 1.1/16"X12 23.47X2.95 41 51 27 32 1TO9-12-10OG/SP R3/4"X14 7/8"X14 19.18X2.46 43 47 27 27 1TO9-12OG/SP R3/4"X14 1.1/16"X12 23.47X2.95 43.5 51 27 32 1TO9-12-16OG/SP R3/4"X14 1.5/16"X12 29.74X2.95 47.5 54.5 33 41 1TO9-16OG/SP R3/4"X14 1.5/16"X12 29.74X2.95 50 54.5 33 41 1TO9-20OG/SP R1.1/4"X11 1.5/8"X12 37.46X3.00 56.5 59.5 41 50 1TO9-16-20OG/SP R1"X11 1.5/8"X12 37.46X3.00 55.5 59 41 50