Technical Information

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

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 with Inner 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

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