PART NO. THREAD O-RING DIMENSIONS E F F A B S1 S2 1KG4-14-04OG M14X1.5 G1/4"X19 10.77X2.62 23.5 27 14 19 1KG4-16-06OG M16X1.5 G3/8"X19 13.94X2.62 25 30 16 22 1KG4-18-06OG M18X1.5 G3/8"X19 13.94X2.62 28 31 19 22 1KG4-20-06OG M20X1.5 G3/8"X19 13.94X2.62 30 31 19 22 1KG4-20-08OG M20X1.5 G1/2"X14 17.12X2.62 31 36 22 27 1KG4-22-08OG M22X1.5 G1/2"X14 17.12X2.62 31 36 22 27 1KG4-30-12OG M30X1.5 G3/4"X14 23.47X2.62 39.5 44 33 32 1KG4-33-16OG M33X1.5 G1"X11 29.74X3.53 41.5 44 33 41