Dimensions of Grooved Gaskets ASME B16.20
| NPS |
d1 |
d2 |
d3 |
| 150 Lbs |
300 Lbs |
400 Lbs |
600 Lbs |
900 Lbs |
1500 Lbs |
2500 Lbs |
| 1/2 |
23 |
33.3 |
44.4 |
50.8 |
50.8 |
50.8 |
60.3 |
60.3 |
66.7 |
| 3/4 |
28.6 |
39.7 |
53.9 |
63.5 |
63.5 |
63.5 |
66.7 |
66.7 |
73 |
| 1 |
36.5 |
47.6 |
63.5 |
69.8 |
69.8 |
69.8 |
76.2 |
76.2 |
82.5 |
| 1¼ |
44.4 |
60.3 |
73 |
79.4 |
79.4 |
79.4 |
85.7 |
85.7 |
101.6 |
| 1½ |
52.4 |
69.8 |
82.5 |
92.1 |
92.1 |
92.1 |
95.2 |
95.2 |
114.3 |
| 2 |
69.8 |
88.9 |
101.6 |
108 |
108 |
108 |
139.7 |
139.7 |
142.8 |
| 2½ |
82.5 |
101.6 |
120.6 |
127 |
127 |
127 |
161.9 |
161.9 |
165.1 |
| 3 |
98.4 |
123.8 |
133.4 |
146.1 |
146.1 |
146.1 |
165.1 |
171.5 |
193.7 |
| 3½ |
111.1 |
136.5 |
158.8 |
161.9 |
158.7 |
158.7 |
- |
- |
- |
| 4 |
123.8 |
154 |
171.5 |
177.8 |
174.6 |
190.5 |
203.2 |
206.4 |
231.7 |
| 5 |
150.8 |
182.6 |
193.7 |
212.7 |
209.5 |
238.1 |
244.5 |
250.8 |
276.2 |
| 6 |
177.8 |
212.7 |
219.1 |
247.7 |
244.5 |
263.5 |
285.8 |
279.4 |
314.3 |
| 8 |
228.6 |
266.7 |
276.2 |
304.8 |
301.6 |
317.5 |
355.6 |
349.3 |
384.1 |
| 10 |
282.6 |
320.7 |
336.5 |
358.8 |
355.6 |
369.9 |
431.8 |
431.8 |
473 |
| 12 |
339.7 |
377.8 |
406.4 |
419.1 |
415.9 |
454 |
495.3 |
517.5 |
546.1 |
| 14 |
371.5 |
409.6 |
447.7 |
482.6 |
479.4 |
488.9 |
517.5 |
574.7 |
- |
| 16 |
422.3 |
466.7 |
511.2 |
536.6 |
533.4 |
561.9 |
571.5 |
638.1 |
- |
| 18 |
479.4 |
530.2 |
546.1 |
593.7 |
590.5 |
609.6 |
635 |
701.7 |
- |
| 20 |
530.2 |
581 |
603.2 |
650.9 |
644.5 |
679.5 |
695.3 |
752.4 |
- |
| 24 |
631.8 |
682.6 |
714.4 |
771.5 |
765.2 |
787.4 |
835 |
898.5 |
- |
notes:
Dimensions are in millimeters unless otherwise indicated.
Images shows Grooved Gaskets with Covering Layer and Centering Ring.
d1 = Inside diameter.
d2 = Outside diameter.
d3 = Outside diameter of centering ring.
Thickness (t) specified by customer.
