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RING GASKETS

RING GASKETS FOR 150 LB ASME/ANSI PIPE FLANGES

Seal & Design can fabricate a wide variety of ring gaskets for any pipe size. The lists below are standard guidelines for both 150lb and 300lb full face gaskets.

There are two styles for Ring Gaskets, Old and New.
Ring Gasket 150lb Comparison Chart

150lb Ring Gasket New Standard
Nominal Pipe SizeGasket I.D.
(Inches)
Gasket O.D.
(Inches)
1/227/321 7/8
3/41 1/162 1/4
11 5/162 5/8
1 1/41 21/323
1 1/21 29/323 3/8
22 3/84 1/8
2 1/22 7/84 7/8
33 1/25 3/8
3 1/246 3/8
44 1/26 7/8
4 1/257
55 9/167 3/4
66 5/88 3/4
77 5/810
88 5/811
1010 3/413 3/8
1212 3/416 1/8
141417 3/4
151519
161620 1/4
181821 5/8
202023 7/8
222226
242428 1/4
262630 1/2
282832 3/4
303034 3/4
323237
343439
363641 1/4
383843 5/8
404045 5/8
424248
464652 1/8
484854 1/2
505056 1/2
525258 3/4
545461
606067 1/2
666674 1/4
727280 3/4
848493 1/2
9696106 1/4
 New STD Old STD
SizeI.D.
(Inches)
O.D.
(Inches)
 I.D.
(Inches)
O.D.
(Inches)
1/227/321 7/8 1/21 7/8
3/41 1/162 1/4 3/42 1/4
11 5/162 5/8 12 5/8
1-1/41 21/323 1 1/43
1-1/21 29/323 3/8 1 1/23 3/8
22 3/84 1/8 24 1/8
2-1/22 7/84 7/8 2 1/24 7/8
33 1/25 3/8 35 3/8
3-1/246 3/8 3 1/26 3/8
44 1/26 7/8 46 7/8
4 1/257 4 1/27
55 9/167 3/4 57 3/4
66 5/88 3/4 68 3/4
77 5/810 710
88 5/811 811
99 5/812 1/2 912 1/2
1010 3/413 3/8 1013 3/8
1212 3/416 1/8 1216 1/8
141417 3/4 1417 3/4
151519 1519
161620 1/4 1620 1/4
181821 5/8 1821 5/8
202023 7/8 2023 7/8
222226 2226

RING GASKETS FOR 300 LB ASME/ANSI PIPE FLANGES

There are two styles for Ring Gaskets, Old and New.
Ring Gasket 300lb Comparison Chart

Nominal Pipe SizeGasket I.D.
(Inches)
Gasket O.D.
(Inches)
1/227/322 1/8
3/41 1/162 5/8
11 5/162 7/8
1 1/41 21/323 1/4
1 1/21 29/323 3/4
22 3/84 3/8
2 1/22 7/85 1/8
33 1/25 7/8
3 1/246 1/2
44 1/27 1/8
4 1/257 5/8
55 9/168 1/2
66 5/89 7/8
77 5/810 7/8
88 5/812 1/8
1010 3/414 1/4
1212 3/416 5/8
141419 1/8
151520 1/8
161621 1/4
181823 1/2
202025 3/4
222227 5/8
242430 1/2
303037 1/2
363644
424250 3/4
484858 3/4
 New STDOld STD
SizeI.D.
(Inches)
O.D.
(Inches)
I.D.
(Inches)
O.D.
(Inches)
1/227/322 1/81/22 1/8
3/41 1/162 5/83/42 5/8
11 5/162 7/812 7/8
1 1/41 21/323 1/41 1/43 1/4
1 1/21 29/323 3/41 1/23 3/4
22 3/84 3/824 3/8
2 1/22 7/85 1/82 1/25 1/8
33 1/25 7/835 7/8
3 1/246 1/23 1/26 1/2
44 1/27 1/847 1/8
4 1/257-5/84 1/27 5/8
55 9/168 1/258 1/2
66 5/89 7/869 7/8
77 5/810-7/8710 7/8
88 5/812 1/8812 1/8
99 5/812 7/8912 7/8
1010 3/414 1/41014 1/4
1212 3/416 5/81216 5/8
141419 1/813 1/419 1/8
151520 1/814 1/420 1/8
161621 1/415 1/421 1/4
181823 1/21723 1/2
202025 3/41925 3/4
222227 5/82127 5/8