PART NO. THREAD O-RING DIMENSIONS E F E A B L S1 S2 2OB-04 7/16"X20 G1/4"X19 8.92X1.83 9.1 5.5 26 14 19 2OB-04-06 7/16"X20 G3/8"X19 8.92X1.83 9.1 6.3 27 17 22 2OB-05-06 1/2"X20 G3/8"X19 10.52X1.83 9.1 6.3 27 17 22 2OB-06 9/16"X18 G3/8"X19 11.89X1.98 9.9 6.3 28 17 22 2OB-06-04 9/16"X18 G1/4"X19 11.89X1.98 9.9 5.5 27 17 19 2OB-06-08 9/16"X18 G1/2"X14 11.89X1.98 9.9 7.5 30 19 27 2OB-08 3/4"X16 G1/2"X14 16.36X2.21 11.1 7.5 33 22 27 2OB-08-06 3/4"X16 G3/8"X19 16.36X2.21 11.1 6.3 31 22 22 2OB-08-12 3/4"X16 G3/4"X14 16.36X2.21 11.1 10.9 36 27 32 2OB-10-06 7/8"X14 G3/8"X19 19.18X2.46 12.7 6.3 35 27 22 2OB-10-08 7/8"X14 G1/2"X14 19.18X2.46 12.7 7.5 36.5 27 27 2OB-10-12 7/8"X14 G3/4"X14 19.18X2.46 12.7 10.9 37.5 27 32 2OB-12-08 1.1/16"X12 G1/2"X14 23.47X2.95 15.1 7.5 40 32 27 2OB-12 1.1/16"X12 G3/4"X14 23.47X2.95 15.1 10.9 41 32 32 2OB-12-16 1.1/16"X12 G1"X11 23.47X2.95 15.1 11.7 42 32 41 2OB-16-12 1.5/16"X12 G3/4"X14 29.74X2.95 15.1 10.9 41 38 32 2OB-16 1.5/16"X12 G1"X11 29.74X2.95 15.1 11.7 42 38 41