Metallic ring joint gaskets are heavy duty, high-pressure gaskets largely used in offshore petrochemical applications.They are precision engineered components designed to be used in conjunction with precision machined flanges. All our Ring Joints are manufactured according to ASME B16.20 and API 6A.
The gasket material is selected on a number of grounds primarily; chemical compatibility with the media and the hardness of the flange. The gasket material ideally needs to be roughly 30 Brinell less than the flange material to ensure sufficient deformation of the gasket without damaging the flange facing.
Flange Pressure Class
Nominal Pipe Size (Inches)
150
300-600
900
1500
2500
API 6A (psi)
2000
3000
5000
1/2
-
R-11
R-12
R-13
3/4
R-14
R-16
1
R-15
R-18
1 1/4
R-17
R-21
1 1/2
R-19
R-20
R-23
2
R-22
R-24
R-26
2 1/16
2 1/2
R-25
R-27
R-28
2 9/16
3
R-29
R-31
R-35
R-32
3 1/8
3 1/2
R-33
R-34
4
R-36
R-37
R-39
R-38
4 1/16
5
R-40
R-41
R-44
R-42
5 1/8
6
R-43
R-45
R-46
R-47
7 1/16
8
R-48
R-49
R-50
R-51
9
10
R-52
R-53
R-54
R-55
11
12
R-56
R-57
R-58
R-60
13 5/8
14
R-59
R-61
R-62
R-63
16
R-64
R-65
R-66
R-67
16 3/4
18
R-68
R-69
R-70
R-71
20
R-72
R-73
R-74
R-75
20 3/4
R74
21 1/4
22
R-80
R-81
24
R-76
R-77
R-78
R-79
26
R-93
R-100
28
R-94
R-101
30
R-95
R-102
32
R-96
R-103
34
R-97
R-104
36
R-98
R-105
API Ring Number
Sizes of Flange (Inches)
Weight
2000 psi
2900 psi
3000 psi
5000 psi
lbs
Kg
RX 20
0.527
0.24
RX 23
1.15
0.523
RX 24
1.33
0.605
RX 26
1.42
0.645
RX 27
1.5
0.682
RX 31
1.73
0.786
RX 35
1.91
0.868
RX 37
2.09
0.95
RX 39
2.27
1.032
RX 41
2.54
1.155
RX 44
2.72
1.236
RX 45
2.96
1.345
RX 46
3.66
1.664
RX 47
8*
8.56
3.891
RX 49
3.79
1.723
RX 50
5.36
2.436
RX 53
4.56
2.073
RX 54
6.45
2.932
RX 57
RX 63
26.4
RX 65
6.63
3.014
RX 66
9.39
4.268
RX 69
7.52
3.418
RX 70
20.14
9.155
RX 73
11.63
5.286
RX 74
22.1
10.045
RX 82
0.79
0.359
RX 84
0.88
0.4
RX 85
RX 86
1.79
0.814
RX 87
1.98
0.9
RX 88
3.22
1.464
RX 89
2.98
1.355
RX 90
6.82
3.1
RX 91
17.1
7.773
RX 99
3.31
1.505
RX 201
0.25
0.114
RX 205
0.3
0.136
RX 210
0.75
0.341
RX 215
Nominal Flange Bore (Inches)
10000 psi
15000 psi
20000 psi
BX 150
1 11/16
BX 151
1 13/16
BX 152
BX 153
BX 154
3 1/16
BX 155
BX 156
BX 157
BX 158
BX 159
BX 160
BX 161
BX 162
BX 163
18 3/4
BX 164
BX 165
BX 166
BX 167
26 3/4
BX 168
BX 169
BX 170
6 5/8
BX 171
8 9/16
BX 172
11 5/32
BX 303
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