DIMENSIONS OF SPIRAL WOUND GASKET ASME B16.20

DIMENSION SPIRAL WOUND GASKET

Dimensions to suit ANSI Standard Flanges
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