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RTJ type R gasket dimensions and tolerances

Class 150-2500 – NPS 1/2-36

Ball Long Pattern
ASME B16.5
R No
Dia P
Width A
Height
Oct C
Oct R1
NPS CL
Oval B
Oct H
R 11
34.14
6.35
11.2
9.7
4.32
1.5
1/2
300 600
R 12
39.7
7.95
14.2
12.7
5.23
1.5
1/2
900 1500
R 13
42.88
7.95
14.2
12.7
5.23
1.5
3/4
300 600
1/2
2500
R 14
44.45
7.95
14.2
12.7
5.23
1.5
3/4
900 1500
R 15
47.63
7.95
14.2
12.7
5.23
1.5
1
150
R 16
50.8
7.95
14.2
12.7
5.23
1.5
1
300 1500
3/4
2500
R 17
57.15
7.95
14.2
12.7
5.23
1.5
1¼
150
R 18
60.33
7.95
14.2
12.7
5.23
1.5
1¼
300 1500
1
2500
R 19
65.1
7.95
14.2
12.7
5.23
1.5
1½
150
R 20
68.28
7.95
14.2
12.7
5.23
1.5
1½
300 1500
R 21
72.24
11.13
17.5
16
7.75
1.5
1¼
2500
R 22
82.55
7.95
14.2
12.7
5.23
1.5
2
150
R 23
82.55
11.13
17.5
16
7.75
1.5
2
300 600
1½
2500
R 24
95.25
11.13
17.5
16
7.75
1.5
2
900 1500
Ball Long Pattern
ASME B16.5
R No
Dia P
Width A
Height
Oct C
Oct R1
NPS CL
Oval B
Oct H
R 25
101.6
7.95
14.2
12.7
5.23
1.5
2½
150
R 26
101.6
11.13
17.5
16
7.75
1.5
2½
300 600
2
2500
R 27
107.95
11.13
17.5
16
7.75
1.5
2½
900 1500
R 28
111.13
12.7
19.1
17.5
8.66
1.5
2½
2500
R 29
114.3
7.95
14.2
12.7
5.23
1.5
3
150
R 30 *
117.48
11.13
17.5
16
7.75
1.5
3
300 600
R 31
123.83
11.13
17.5
16
7.75
1.5
3
300 900
R 32
127
12.7
19.1
17.5
8.66
1.5
3
2500
R 33
131.78
7.95
14.2
12.7
5.23
1.5
3½
150
R 34
131.78
11.13
17.5
16
7.75
1.5
3½
300 600
R 35
136.53
11.13
17.5
16
7.75
1.5
3
1500
R 36
149.23
7.95
14.2
12.7
5.23
1.5
4
150
R 37
149.23
11.13
17.5
16
7.75
1.5
4
300 900
R 38
157.18
15.88
22.4
20.6
10.49
1.5
4
2500
Ball Long Pattern
R No
Dia P
Width A
Height
Oct C
Oct R1
NPS CL
Oval B
Oct H
R 39
161.93
11.13
17.5
16
7.75
1.5
4
1500
R 40
171.45
7.95
14.2
12.7
5.23
1.5
5
150
R 41
180.98
11.13
17.5
16
7.75
1.5
5
300 900
R 42
190.5
19.05
25.4
23.9
12.32
1.5
5
2500
R 43
193.68
7.95
14.2
12.7
5.23
1.5
6
150
R 44
193.68
11.13
17.5
16
7.75
1.5
5
1500
R 45
211.15
11.13
17.5
16
7.75
1.5
6
300 900
R 46
211.15
12.7
19.1
17.5
8.66
1.5
6
1500
R 47
228.6
19.05
25.4
23.9
12.32
1.5
6
2500
R 48
247.65
7.95
14.2
12.7
5.23
1.5
8
150
R 49
269.88
11.13
17.5
16
7.75
1.5
8
300 900
R 50
269.88
15.88
22.4
20.6
10.49
1.5
8
1500
R 51
279.4
22.23
28.7
26.9
14.81
1.5
8
2500
R 52
304.8
7.95
14.2
12.7
5.23
1.5
10
150
Ball Long Pattern
R No
Dia P
Width A
Height
Oct C
Oct R1
NPS CL
Oval B
Oct H
R 53
323.85
11.13
17.5
16
7.75
1.5
10
300 900
R 54
323.85
15.88
22.4
20.6
10.49
1.5
10
1500
R 55
342.9
28.58
36.6
35.1
19.81
2.3
10
2500
R 56
381
7.95
14.2
12.7
5.23
1.5
12
150
R 57
381
11.13
17.5
16
7.75
1.5
12
300 900
R 58
381
22.23
28.7
26.9
14.81
1.5
12
1500
R 59
396.88
7.95
14.2
12.7
5.23
1.5
14
150
R 60
406.4
31.75
39.6
38.1
22.33
2.3
12
2500
R 61
419.1
11.13
17.5
16
7.75
1.5
14
300 600
R 62
419.1
15.88
22.4
20.6
10.49
1.5
14
900
R 63
419.1
25.4
33.3
31.8
17.3
2.3
14
1500
R 64
454.03
7.95
14.2
12.7
5.23
1.5
16
150
R 65
469.9
11.13
17.5
16
7.75
1.5
16
300 600
R 66
469.9
15.88
22.4
20.6
10.49
1.5
16
900
Ball Long Pattern
R No
Dia P
Width A
Height
Oct C
Oct R1
NPS CL
Oval B
Oct H
R 67
469.9
28.58
36.6
35.1
19.81
2.3
16
1500
R 68
517.53
7.95
14.2
12.7
5.23
1.5
18
150
R 69
533.4
11.13
17.5
16
7.75
1.5
18
300 600
R 70
533.4
19.05
25.4
23.9
12.32
1.5
18
900
R 71
533.4
28.58
36.6
35.1
19.81
2.3
18
1500
R 72
558.8
7.95
14.2
12.7
5.23
1.5
20
150
R 73
584.2
12.7
19.1
17.5
8.66
1.5
20
300 600
R 74
584.2
19.05
25.4
23.9
12.32
1.5
20
900
R 75
584.2
31.75
39.6
38.1
22.33
2.3
20
1500
R 76
673.1
7.95
14.2
12.7
5.23
1.5
24
150
R 77
692.15
15.88
22.4
20.6
10.49
1.5
24
300 600
R 78
692.15
25.4
33.3
31.8
17.3
2.3
24
900
R 79
692.15
34.93
44.5
41.4
24.82
2.3
24
1500
Ball Long Pattern
ASME B16.47 SERIES A
R No
Dia P
Width A
Height
Oct C
Oct R1
NPS CL
Oval B
Oct H
R 93
749.3
19.05
...
23.9
12.32
1.5
26
300 600
R 94
800.1
19.05
...
23.9
12.32
1.5
28
300 600
R 95
857.25
19.05
...
23.9
12.32
1.5
30
300 600
R 96
914.4
22.23
...
26.9
14.81
1.5
32
300 600
R 97
965.2
22.23
...
26.9
14.81
1.5
34
300 600
R 98
1022.35
22.23
...
26.9
14.81
1.5
36
300 600
R 100
749.3
28.58
...
35.1
19.81
2.3
26
900
R 101
800.1
31.75
...
38.1
22.33
2.3
28
900
R 102
857.25
31.75
...
38.1
22.33
2.3
30
900
R 103
914.4
31.75
...
38.1
22.33
2.3
32
900
R 104
965.2
34.93
...
41.4
24.82
2.3
34 900
R 105
1022.35
34.93
...
41.4
24.82
2.3
36
900
R No
Dia P
Width A
Height
Oct C
Oct R1
NPS CL
Oval B
Oct H

Dimensions & Tolerances Type R Ring Gaskets ASME B16.20 to be used with RTJ flanges ASME B16.5 & B16.47 series A

General notes:

  • P = average pitch diameter of ring ±0.18
  • A = width of ring ±0.20
  • B & H = height of ring +1.3. -0.5
    Variation in height throughout the entire circumference of any given ring shall not exceed 0.5 within these tolerances
  • C = width of flat on octagonal ring ±0.20
  • R1 = radius in ring ±0.5
  • 23 deg = angle ±0 deg 30 min
  • R-30 = for lapped joint only

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