Dimensions of Double Metal-Jacketed Gaskets
Dimensions of Double Metal-Jacketed Gaskets ASME B16.20 to be used with Raised Face flanges ASME B16.5
Double Metal Jacketed Gaskets
Class 150# to 400#
| NPS |
d1 |
d2 |
| 150 |
300 |
400 |
| 1/2 |
23.8 |
44.5 |
50.8 |
50.8 |
| 3/4 |
31.8 |
54 |
63.5 |
63.5 |
| 1 |
36.5 |
63.5 |
69.9 |
69.9 |
| 1¼ |
46 |
73 |
79.4 |
79.4 |
| 1½ |
52.4 |
82.6 |
92.1 |
92.1 |
| 2 |
73.2 |
101.6 |
108 |
108 |
| 2½ |
85.9 |
120.6 |
127 |
127 |
| 3 |
107.8 |
133.4 |
146.1 |
146.1 |
| 4 |
131.8 |
171.5 |
177.8 |
174.7 |
| 5 |
152.4 |
193.8 |
212.8 |
209.5 |
| 6 |
190.5 |
219.1 |
247.7 |
244.5 |
| 8 |
238.3 |
276.3 |
304.8 |
301.7 |
| 10 |
285.8 |
336.6 |
358.8 |
355.6 |
| 12 |
342.9 |
406.4 |
419.1 |
415.9 |
| 14 |
374.7 |
447.7 |
482.6 |
479.5 |
| 16 |
425.5 |
511.2 |
536.6 |
533.4 |
| 18 |
489 |
546.1 |
593.7 |
590.6 |
| 20 |
533.4 |
603.3 |
650.9 |
644.5 |
| 24 |
641.4 |
714.4 |
771.6 |
765.3 |
| NPS |
d1 |
150 |
300 |
400 |
| d2 |
Double Metal Jacketed Gaskets
Class 600# to 2500#
| NPS |
d1 |
d2 |
| 600 |
900 |
1500 |
2500 |
| 1/2 |
23.8 |
50.8 |
60.4 |
60.4 |
66.8 |
| 3/4 |
31.8 |
63.5 |
66.7 |
66.7 |
73.1 |
| 1 |
36.5 |
69.9 |
76.2 |
76.2 |
82.5 |
| 1¼ |
46 |
79.4 |
85.8 |
85.8 |
101.6 |
| 1½ |
52.4 |
92.1 |
95.3 |
95.3 |
114.3 |
| 2 |
73.2 |
108 |
139.7 |
139.7 |
143 |
| 2½ |
85.9 |
127 |
161.9 |
161.9 |
165.1 |
| 3 |
107.8 |
146.1 |
165.1 |
171.5 |
193.8 |
| 4 |
131.8 |
190.5 |
203.2 |
206.5 |
231.9 |
| 5 |
152.4 |
238.2 |
244.6 |
250.9 |
276.3 |
| 6 |
190.5 |
263.6 |
285.8 |
279.4 |
314.5 |
| 8 |
238.3 |
317.5 |
355.6 |
349.3 |
384.3 |
| 10 |
285.8 |
396.9 |
431.8 |
431.8 |
473.2 |
| 12 |
342.9 |
454.1 |
495.3 |
517.6 |
546.1 |
| 14 |
374.7 |
489 |
517.6 |
574.7 |
… |
| 16 |
425.5 |
562 |
571.5 |
638.2 |
… |
| 18 |
489 |
609.6 |
635 |
701.8 |
… |
| 20 |
533.4 |
679.5 |
695.5 |
752.5 |
… |
| 24 |
641.4 |
787.4 |
835.1 |
898.6 |
… |
| NPS |
d1 |
600 |
900 |
1500 |
2500 |
| d2 |
General notes:
- Dimensions are in millimeters unless otherwise indicated.
- d1 = Inside diameter.
- d2 = Outside diameter.
- Dimensional dimensional tolerances diameter up to NPS 24 = + 1.58 / – 0 mm for both diameters.
- Dimensional dimensional tolerances thickness (t) up to NPS 24 = + 0.80 / – 0 mm.
- Thickness (t) specified by customer.
