Technical Information

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Type CG (Gasket with Centering Ring)

Solid metallic outer ring used as a centering device and compression stop
Used mainly on raised face and flat face flanges
Wide choice of materials for filler and metal strip
General duties

Type GI (Gasket withInner Ring)

Solid metallic inner ring
High pressure & high temperature capability
Male to female flanges in vessels, valves and pumps
Wide choice of materials for filler and metal strip
General and critical duties

Type G (Gasket Only)

Wide choice of materials for filler and metallic strip
Suitable for high pressure and temperature applications
Recommended flanges are tongue & groove, male to female and flat face to recess in vessels, valves and pumps
General and critical duties

Type CGI (Gasket with Centering Ring & Inner Ring)

Solid metallic inner & outer ring
Suitable for high pressure and temperature applications
Standard spiral wound gasket for raised face applications
Prevents turbulence and erosion damage to flange
Prevents damage to the gasket bore and inner windings
Inner ring acts as a heat shield and as a corrosion barrier
Wide choice of materials for filler and metal strip
General and critical duties

Dimensions

Class 150 ASME B16.20

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
1/2"	48 x 32 x 19 x 14	3 "	137 x 121 x 102 x 81	14 "	451 x 406 x 372 x 349
3/4"	57 x 40 x 25 x 21	4 "	175 x 149 x 127 x 106	16 "	514 x 464 x 422 x 400
1 "	67 x 48 x 32 x 27	5 "	197 x 178 x 156 x 132	18 "	549 x 527 x 475 x 449
1 1/4"	76 x 60 x 48 x 38	6 "	222 x 210 x 183 x 157	20 "	607 x 578 x 526 x 500
1 1/2"	86 x 70 x 54 x 44	8 "	279 x 264 x 233 x 216	24 "	718 x 686 x 629 x 603
2 "	105 x 86 x 70 x 56	10 "	340 x 318 x 287 x 268
2 1/2"	124 x 99 x 83 x 67	12 "	410 x 375 x 340 x 318

Class 300 ASME B16.20

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
1/2"	54 x 32 x 19 x 14	3 "	149 x 121 x 102 x 81	14 "	486 x 406 x 372 x 349
3/4"	67 x 40 x 25 x 21	4 "	181 x 149 x 127 x 106	16 "	540 x 464 x 422 x 400
1 "	73 x 48 x 32 x 27	5 "	216 x 178 x 156 x 132	18 "	597 x 527 x 475 x 449
1 1/4"	83 x 60 x 48 x 38	6 "	251 x 210 x 183 x 157	20 "	654 x 578 x 526 x 500
1 1/2"	95 x 70 x 54 x 44	8 "	308 x 264 x 233 x 216	24 "	775 x 686 x 629 x 603
2 "	111 x 86 x 70 x 56	10 "	362 x 318 x 287 x 268
2 1/2"	130 x 99 x 83 x 67	12 "	422 x 375 x 340 x 318

Class 600 ASME B16.20

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
1/2"	54 x 32 x 19 x 14	3 "	149 x 121 x 102 x 79	14 "	492 x 406 x 362 x 343
3/4"	67 x 40 x 25 x 21	4 "	194 x 149 x 121 x 103	16 "	565 x 464 x 413 x 390
1 "	73 x 48 x 32 x 27	5 "	241 x 178 x 148 x 128	18 "	613 x 527 x 470 x 438
1 1/4"	83 x 60 x 48 x 38	6 "	267 x 210 x 175 x 155	20 "	683 x 578 x 521 x 489
1 1/2"	95 x 70 x 54 x 44	8 "	321 x 264 x 226 x 206	24 "	791 x 686 x 629 x 591
2 "	111 x 86 x 70 x 56	10 "	400 x 318 x 275 x 255
2 1/2"	130 x 99 x 83 x 67	12 "	457 x 375 x 327 x 307

Class 900 ASME B16.20

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
1/2"	64 x 32 x 19 x 14	3 "	168 x 121 x 95 x 79	14 "	521 x 400 x 356 x 321
3/4"	70 x 40 x 25 x 21	4 "	207 x 149 x 121 x 103	16 "	575 x 457 x 413 x 375
1 "	80 x 48 x 32 x 27	5 "	248 x 178 x 148 x 128	18 "	638 x 521 x 464 x 425
1 1/4"	89 x 60 x 40 x 33	6 "	289 x 210 x 175 x 155	20 "	699 x 572 x 521 x 483
1 1/2"	99 x 70 x 48 x 41	8 "	359 x 257 x 222 x 197	24 "	838 x 679 x 629 x 591
2 "	143 x 86 x 59 x 52	10 "	435 x 311 x 276 x 246
2 1/2"	165 x 99 x 70 x 64	12 "	499 x 368 x 324 x 292

Class 1500 ASME B16.20

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
1/2"	64 x 32 x 19 x 14	3 "	175 x 121 x 92 x 79	14 "	578 x 400 x 362 x 321
3/4"	70 x 40 x 25 x 21	4 "	210 x 149 x 118 x 98	16 "	641 x 457 x 406 x 368
1 "	80 x 48 x 32 x 27	5 "	254 x 178 x 143 x 124	18 "	705 x 521 x 464 x 425
1 1/4"	89 x 60 x 40 x 33	6 "	283 x 210 x 171 x 147	20 "	756 x 572 x 514 x 476
1 1/2"	99 x 70 x 48 x 41	8 "	353 x 257 x 216 x 197	24 "	902 x 679 x 616 x 578
2 "	143 x 86 x 59 x 52	10 "	435 x 311 x 267 x 246
2 1/2"	165 x 99 x 70 x 64	12 "	521 x 368 x 324 x 292

Class 2500 ASME B16.20

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
1/2"	70 x 32 x 19 x 14	2 "	146 x 86 x 59 x 52	6 "	318 x 210 x 171 x 147
3/4"	76 x 40 x 25 x 21	2 1/2"	168 x 99 x 70 x 64	8 "	387 x 257 x 216 x 197
1 "	86 x 48 x 32 x 27	3 "	197 x 121 x 92 x 79	10 "	476 x 311 x 270 x 246
1 1/4"	105 x 60 x 40 x 33	4 "	235 x 149 x 118 x 98	12 "	549 x 368 x 318 x 292
1 1/2"	118 x 70 x 48 x 41	5 "	279 x 178 x 143 x 124

Class 150 ASME B16.47 series A

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
26"	775 x 705 x 673 x 654	38"	1111 x 1019 x 978 x 959	50"	1435 x 1334 x 1283 x 1264
28"	832 x 756 x 724 x 705	40"	1162 x 1070 x 1029 x 1010	52"	1492 x 1384 x 1334 x 1314
30"	883 x 806 x 775 x 756	42"	1219 x 1124 x 1080 x 1060	54"	1549 x 1435 x 1384 x 1359
32"	940 x 861 x 826 x 806	44"	1276 x 1178 x 1130 x 1111	56"	1607 x 1486 x 1435 x 1410
34"	991 x 911 x 876 x 857	46"	1327 x 1229 x 1181 x 1162	58"	1664 x 1537 x 1486 x 1461
36"	1048 x 969 x 927 x 908	48"	1384 x 1280 x 1232 x 1213	60"	1715 x 1588 x 1537 x 1511

Class 300 ASME B16.47 series A

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
26"	835 x 737 x 686 x 654	38"	1054 x 1016 x 978 x 953	50"	1378 x 1346 x 1295 x 1245
28"	899 x 787 x 737 x 705	40"	1115 x 1070 x 1022 x 1003	52"	1429 x 1403 x 1346 x 1321
30"	953 x 845 x 794 x 756	42"	1165 x 1121 x 1073 x 1054	54"	1492 x 1454 x 1397 x 1353
32"	1007 x 902 x 851 x 806	44"	1219 x 1181 x 1130 x 1105	56"	1543 x 1505 x 1454 x 1403
34"	1057 x 953 x 902 x 857	46"	1273 x 1229 x 1178 x 1153	58"	1594 x 1562 x 1511 x 1448
36"	1118 x 1007 x 956 x 908	48"	1324 x 1286 x 1235 x 1210	60"	1645 x 1613 x 1562 x 1524

Class 600 ASME B16.47 series A

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
26"	867 x 737 x 686 x 648	38"	1105 x 1041 x 991 x 953	50"	1448 x 1372 x 1321 x 1270
28"	914 x 787 x 737 x 699	40"	1156 x 1099 x 1048 x 1010	52"	1499 x 1422 x 1372 x 1321
30"	972 x 845 x 794 x 756	42"	1219 x 1156 x 1105 x 1067	54"	1556 x 1480 x 1429 x 1378
32"	1022 x 902 x 851 x 813	44"	1270 x 1213 x 1162 x 1111	56"	1613 x 1530 x 1480 x 1429
34"	1073 x 953 x 902 x 864	46"	1327 x 1264 x 1213 x 1162	58"	1664 x 1588 x 1537 x 1473
36"	1130 x 1007 x 956 x 918	48"	1391 x 1321 x 1270 x 1219	60"	1734 x 1645 x 1594 x 1530

Class 900 ASME B16.47 series A

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
26"	883 x 737 x 686 x 660	34"	1137 x 953 x 902 x 864	42"	1302 x 1200 x 1149 x 1111
28"	946 x 787 x 737 x 711	36"	1200 x 1010 x 959 x 921	44"	1369 x 1257 x 1207 x 1156
30"	1010 x 845 x 794 x 768	38"	1200 x 1086 x 1035 x 1010	46"	1435 x 1321 x 1270 x 1219
32"	1073 x 902 x 851 x 813	40"	1251 x 1149 x 1099 x 1060	48"	1486 x 1372 x 1321 x 1270

Class 150 ASME B16.47 series B

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
26"	725 x 699 x 673 x 654	38"	1045 x 1010 x 975 x 959	50"	1357 x 1326 x 1283 x 1264
28"	776 x 749 x 724 x 705	40"	1096 x 1064 x 1022 x 1010	52"	1408 x 1376 x 1334 x 1314
30"	827 x 800 x 775 x 756	42"	1146 x 1115 x 1080 x 1060	54"	1464 x 1422 x 1384 x 1365
32"	881 x 851 x 826 x 806	44"	1197 x 1165 x 1124 x 1111	56"	1515 x 1478 x 1445 x 1422
34"	935 x 908 x 876 x 857	46"	1256 x 1224 x 1181 x 1162	58"	1580 x 1529 x 1500 x 1478
36"	988 x 959 x 927 x 908	48"	1307 x 1270 x 1232 x 1213	60"	1630 x 1586 x 1557 x 1535

Class 300 ASME B16.47 series B

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
26"	772 x 711 x 673 x 654	38"	1099 x 1048 x 1010 x 972	50"	1419 x 1356 x 1318 x 1267
28"	826 x 762 x 724 x 705	40"	1149 x 1099 x 1060 x 1022	52"	1470 x 1407 x 1369 x 1318
30"	886 x 813 x 775 x 756	42"	1200 x 1149 x 1111 x 1086	54"	1530 x 1454 x 1403 x 1365
32"	940 x 864 x 826 x 806	44"	1251 x 1200 x 1162 x 1124	56"	1594 x 1524 x 1480 x 1429
34"	994 x 914 x 876 x 857	46"	1318 x 1254 x 1216 x 1178	58"	1656 x 1573 x 1535 x 1484
36"	1048 x 965 x 927 x 908	48"	1369 x 1311 x 1264 x 1232	60"	1707 x 1630 x 1589 x 1557

Class 600 ASME B16.47 series B

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
26"	765 x 715 x 664 x 645	38"	1105 x 1041 x 991 x 953	50"	1448 x 1372 x 1321 x 1270
28"	819 x 756 x 705 x 699	40"	1156 x 1099 x 1048 x 1010	52"	1499 x 1422 x 1372 x 1321
30"	880 x 829 x 778 x 753	42"	1219 x 1156 x 1105 x 1067	54"	1556 x 1480 x 1429 x 1378
32"	933 x 883 x 832 x 794	44"	1270 x 1213 x 1162 x 1111	56"	1613 x 1530 x 1480 x 1429
34"	997 x 940 x 889 x 851	46"	1327 x 1264 x 1213 x 1162	58"	1664 x 1588 x 1537 x 1473
36"	1048 x 991 x 940 x 902	48"	1391 x 1321 x 1270 x 1219	60"	1734 x 1645 x 1594 x 1530

Class 900 ASME B16.47 series B

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
26"	838 x 749 x 705 x 667	34"	1073 x 971 x 921 x 895	42"	1302 x 1200 x 1149 x 1111
28"	902 x 800 x 743 x 718	36"	1124 x 997 x 946 x 921	44"	1369 x 1257 x 1207 x 1156
30"	959 x 857 x 806 x 781	38"	1200 x 1086 x 1035 x 1010	46"	1435 x 1321 x 1270 x 1219
32"	1016 x 914 x 864 x 838	40"	1251 x 1149 x 1099 x 1060	48"	1486 x 1372 x 1321 x 1270

Dimensions to suit DIN Standard Flanges

PN10

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
10	46 x 36 x 24 x 18	175	247 x 221 x 195 x 183	1200	1341 x 1280 x 1230 x 1210
15	51 x 40 x 28 x 22	200	272 x 251 x 225 x 213	1400	1548 x 1510 x 1450 x 1420
20	61 x 47 x 33 x 27	250	327 x 307 x 286 x 267	1600	1772 x 1720 x 1660 x 1630
25	71 x 54 x 40 x 34	300	377 x 358 x 337 x 318	1800	1972 x 1920 x 1860 x 1830
32	82 x 65 x 49 x 43	350	437 x 405 x 375 x 363	2000	2182 x 2120 x 2050 x 2020
40	92 x 70 x 54 x 48	400	488 x 458 x 426 x 414	2200	2384 x 2330 x 2260 x 2230
50	107 x 84 x 66 x 57	500	593 x 566 x 530 x 518	2400	2594 x 2530 x 2460 x 2430
65	127 x 102 x 82 x 73	600	695 x 666 x 630 x 618	2600	2794 x 2730 x 2660 x 2630
80	142 x 115 x 95 x 86	700	810 x 770 x 730 x 718	2800	3014 x 2930 x 2860 x 2830
100	162 x 140 x 120 x 108	800	917 x 874 x 830 x 818	3000	3228 x 3130 x 3060 x 3030
125	192 x 168 x 146 x 134	900	1017 x 974 x 930 x 910
150	217 x 196 x 174 x 162	1000	1124 x 1078 x 1030 x 1010

PN16

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
10	46 x 36 x 24 x 18	125	192 x 168 x 146 x 134	700	804 x 770 x 730 x 718
15	51 x 40 x 28 x 22	150	217 x 196 x 174 x 162	800	911 x 874 x 830 x 818
20	61 x 47 x 33 x 27	175	247 x 221 x 195 x 183	900	1011 x 974 x 930 x 910
25	71 x 54 x 40 x 34	200	272 x 251 x 225 x 213	1000	1128 x 1078 x 1030 x 1010
32	82 x 65 x 49 x 43	250	328 x 307 x 286 x 267	1200	1342 x 1280 x 1230 x 1210
40	92 x 70 x 54 x 48	300	383 x 358 x 337 x 318	1400	1542 x 1510 x 1450 x 1420
50	107 x 84 x 66 x 57	350	443 x 405 x 375 x 363	1600	1764 x 1720 x 1660 x 1630
65	127 x 102 x 82 x 73	400	495 x 458 x 426 x 414	1800	1964 x 1920 x 1860 x 1830
80	142 x 115 x 95 x 86 >	500	617 x 566 x 530 x 518	2000	2168 x 2120 x 2050 x 2020
100	162 x 140 x 120 x 108	600	734 x 666 x 630 x 618	2200	2378 x 2330 x 2260 x 2230

PN25

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
10	46 x 36 x 24 x 18	125	193 x 168 x 146 x 134	700	833 x 770 x 730 x 718
15	51 x 40 x 28 x 22	150	223 x 196 x 174 x 162	800	942 x 874 x 830 x 818
20	61 x 47 x 33 x 27	175	253 x 221 x 195 x 183	900	1042 x 974 x 930 x 910
25	71 x 54 x 40 x 34	200	283 x 251 x 225 x 213	1000	1154 x 1078 x 1030 x 1010
32	82 x 65 x 49 x 43	250	340 x 307 x 286 x 267	1200	1364 x 1280 x 1230 x 1210
40	92 x 70 x 54 x 48	300	400 x 358 x 337 x 318	1400	1578 x 1510 x 1450 x 1420
50	107 x 84 x 66 x 57	350	457 x 405 x 375 x 363	1600	1798 x 1720 x 1660 x 1630
65	127 x 102 x 82 x 73	400	514 x 458 x 426 x 414	1800	2000 x 1920 x 1860 x 1830
80	142 x 115 x 95 x 86 >	500	624 x 566 x 530 x 518	2000	2230 x 2120 x 2050 x 2020
100	167 x 140 x 120 x 108	600	731 x 666 x 630 x 618

PN40

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
10	46 x 36 x 24 x 18	100	167 x 140 x 120 x 108 >	500	628 x 566 x 530 x 518
15	51 x 40 x 28 x 22	125	193 x 168 x 146 x 134	600	747 x 666 x 630 x 618
20>	61 x 47 x 33 x 27	150	223 x 196 x 174 x 162	700	852 x 770 x 730 x 718
>25	71 x 54 x 40 x 34	175	265 x 221 x 195 x 183	800	974 x 874 x 830 x 818
32	82 x 65 x 49 x 43	200	290 x 251 x 225 x 213	900	1084 x 974 x 930 x 910
40	92 x 70 x 54 x 48	250	352 x 307 x 286 x 267	1000	1194 x 1078 x 1030 x 1010
50	107 x 84 x 66 x 57	300	417 x 358 x 337 x 318	1200	1398 x 1280 x 1230 x 1210
65	127 x 102 x 82 x 73	350	474 x 405 x 375 x 363	1400	1618 x 1510 x 1450 x 1420
80	142 x 115 x 95 x 86	400	546 x 458 x 426 x 414	1600	1830 x 1720 x 1660 x 1630

PN64

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
10	56 x 36 x 24 x 18	100	173 x 144 x 120 x 108	500	657 x 574 x 530 x 518
15	61 x 40 x 28 x 22	125	210 x 172 x 146 x 134	600	764 x 674 x 630 x 618
20	74 x 47 x 33 x 27	150	247 x 200 x 174 x 162	700	879 x 778 x 730 x 718
25	82 x 54 x 40 x 34	175	277 x 227 x 195 x 183	800	988 x 882 x 830 x 818
32	90 x 65 x 49 x 43	200	309 x 257 x 225 x 213	900	1108 x 982 x 930 x 910
40	102 x 70 x 54 x 48	250	364 x 315 x 286 x 267	1000	1220 x 1086 x 1030 x 1010
50	112 x 84 x 66 x 57	300	424 x 366 x 337 x 318	1200	1452 x 1290 x 1230 x 1210
65	137 x 104 x 82 x 73	350	486 x 413 x 375 x 363
80	147 x 119 x 95 x 86	400	543 x 466 x 426 x 414

PN100

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
10	56 x 36 x 24 x 18	65	143 x 104 x 82 x 73	250	391 x 315 x 286 x 267
15	61 x 40 x 28 x 22	80	153 x 119 x 95 x 86	300	458 x 366 x 337 x 318
20	74 x 47 x 33 x 27	100	180 x 144 x 120 x 108	350	512 x 413 x 375 x 363
25	82 x 54 x 40 x 34	125	217 x 172 x 146 x 134	400	572 x 466 x 426 x 414
32	90 x 65 x 49 x 43	150	257 x 200 x 174 x 162	500	704 x 574 x 530 x 518
40	102 x 70 x 54 x 48	175	287 x 227 x 195 x 183	600	813 x 674 x 630 x 618
50	118 x 84 x 66 x 57	200	324 x 257 x 225 x 213

PN160

Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)	Nominal Size	Dimensions (mm)
10	56 x 36 x 24 x 18	50	118 x 84 x 66 x 57	175	284 x 227 x 195 x 183
15	61 x 40 x 28 x 22	65	143 x 104 x 82 x 73	200	324 x 257 x 225 x 213
20	74 x 47 x 33 x 27	80	153 x 119 x 95 x 86	250	388 x 315 x 286 x 267
25	82 x 54 x 40 x 34	100	180 x 144 x 120 x 108	300	458 x 366 x 337 x 318
32	90 x 65 x 49 x 43	125	217 x 172 x 146 x 134
40	102 x 70 x 54 x 48	150	257 x 200 x 174 x 162