Dimensions Double Metal Jacketed Gaskets ASME B16.20

to be used with Raised Face flanges ASME B16.5

Dimensions of Double Metal-Jacketed Gaskets

Class 150 - 400

NPS	d1	d2
NPS	d1	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
1.1/4	46	73	79.4	79.4
1.1/2	52.4	82.6	92.1	92.1
2	73.2	101.6	108	108
2.1/2	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

Double Metal-Jacketed Gasket

Class 600 - 2500

NPS	d1	d2
NPS	d1	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
1.1/4	46	79.4	85.8	85.8	101.6
1.1/2	52.4	92.1	95.3	95.3	114.3
2	73.2	108	139.7	139.7	143
2.1/2	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

General notes..

Dimensions are in millimeters unless otherwise indicated.
d1 = Inside diameter.
d2 = Outside diameter.
Dimensional tolerances diameter to NPS 24 = + 1.58
- 0 mm for both diameters.
Dimensional tolerances thickness (t)
to NPS 24 = + 0.80 / - 0 mm.
Thickness (t) specified by customer.

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