Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11 Page 12 Page 13 Page 14 Page 15 Page 16 Page 17 Page 18 Page 19 Page 20 Page 21 Page 22 Page 23 Page 24 Page 25 Page 26 Page 27 Page 28 Page 29 Page 30 Page 31 Page 32 Page 33 Page 34 Page 35 Page 36 Page 37 Page 38 Page 39 Page 40 Page 41 Page 42 Page 43 Page 44 Page 45 Page 46 Page 47 Page 48 Page 49 Page 50 Page 51 Page 52 Page 53 Page 54 Page 55 Page 56 Page 57 Page 58 Page 59 Page 60 Page 61 Page 62 Page 63 Page 64 Page 65 Page 66 Page 67 Page 68 Page 69 Page 70 Page 71 Page 72 Page 73 Page 74 Page 75 Page 76 Page 77 Page 78 Page 79 Page 80 Page 81 Page 82 Page 83 Page 84 Page 85 Page 86 Page 87 Page 88 Page 89 Page 90 Page 91 Page 92 Page 93 Page 94 Page 95 Page 96 Page 97 Page 98 Page 99 Page 100 Page 101 Page 102 Page 103 Page 104 Page 105 Page 106 Page 107 Page 108PAGE 24 RING GASKET MATERIAL MAXIMUM HARDNESS IDENTIFICATION Brinell Rockwell ‘B’ Scale ASME B16.20 API-6A Soft Iron 90 56 D D - 4 Low Carbon Steel 120 68 S S - 4 4 - 6 Chrome 1/2 Moly 130 72 F5 - Type 410 170 86 S410 - Type 304 160 83 S304 S304 - 4 Type 316 160 83 S316 S316 - 4 Type 347 160 83 S347 - RINGGASKETS&RINGGROOVEDIMENSIONS 4 TYPE R RING GASKETS (As per ASME B16.20) RING NO. ØP A B H C R1 R-11 1.344 0.250 0.44 0.38 0.170 0.06 R-12 1.563 0.313 0.56 0.50 0.206 0.06 R-13 1.688 0.313 0.56 0.50 0.206 0.06 R-14 1.750 0.313 0.56 0.50 0.206 0.06 R-15 1.875 0.313 0.56 0.50 0.206 0.06 R-16 2.000 0.313 0.56 0.50 0.206 0.06 R-17 2.250 0.313 0.56 0.50 0.206 0.06 R-18 2.375 0.313 0.56 0.50 0.206 0.06 R-19 2.563 0.313 0.56 0.50 0.206 0.06 R-20 2.688 0.313 0.56 0.50 0.206 0.06 R-21 2.844 0.438 0.69 0.63 0.305 0.06 R-22 3.250 0.313 056 0.50 0.206 0.06 R-23 3.250 0.438 0.69 0.63 0.305 0.06 R-24 3.750 0.438 0.69 0.63 0.305 0.06 R-25 4.000 0.313 0.56 0.50 0.206 0.06 R-26 4.000 0.438 0.69 0.63 0.305 0.06 R-27 4.250 0.438 0.75 0.63 0.305 0.06 R-28 4.375 0.500 0.56 0.69 0.341 0.06 R-29 4.500 0.313 0.69 0.50 0.206 0.06 R-30 4.625 0.438 0.69 0.63 0.305 0.06 R-31 4.875 0.438 069 0.63 0.305 0.06 R-32 5.000 0.500 0.75 0.69 0.341 0.06 R-33 5.188 0.313 0.56 0.50 0.206 0.06 R-34 5.188 0.438 0.69 0.63 0.305 0.06 R-35 5.375 0.438 0.69 0.63 0.305 0.06 R-36 5.875 0.313 0.56 0.50 0.206 0.06 R-37 5.875 0.438 0.69 0.63 0.305 0.06 R-38 6.188 0.625 0.88 0.81 0.413 0.06 R-39 6.375 0.438 0.69 0.63 0.305 0.06 R-40 6.750 0.313 0.56 0.50 0.206 0.06 R-41 7.125 0.438 0.69 0.63 0.305 0.06 R-42 7.500 0.750 1.00 0.94 0.485 0.06 R-43 7.625 0.313 0.56 0.50 0.206 0.06 R-44 7.625 0.438 0.69 0.63 0.305 0.06 R-45 8.313 0.438 0.69 0.63 0.305 0.06 R-46 8.313 0.500 0.75 0.69 0.341 0.06 1 Ring Joint Gaskets are either octagonal or oval made to ASME B16.20 in various sizes. These are identified by numbers R, RX or BX that relate to Flange size, pressure, class, and appropriate standards ASME B16.20 or API6A. Materials for these gaskets are selected based on suitability for service conditions. It is essential that Ring Joint Gaskets be of a hardness lower than the Flanges. The recommended hardness and their identification is given in table below: *All dimensions are in inches * Tolerances as per ASME B16.20 ØP H C A A B ØP Octagonal (Fig. 1) Oval (Fig. 2) (TYP.) 23° (TYP.) 23° (TYP.) R1