Ghi chú
• Kích thước được tính bằng đơn vị millimeters .
• Hình ảnh thể hiện: Spiral Wound gasket with Inner and Outer ring (3 vòng).
• d1 = Đường kính trong (ID) vòng Inner ring.
• d2 = Đường kính trong (ID) vòng Sealing Element.
• d3 = Đường kính ngoài (OD) vòng Sealing Element.
• d4 = Đường kính ngoài (OD) vòng Outer Ring.
• Độ dày Inner ring & Outer Ring: 2.97mm - 3.33mm.
• Độ dày Sealing Element : 4.45mm.
• Dung sai đường kính ngoài OD
NPS 1/2 ~ NPS 8 : ±0.8mm.
NPS 10 ~ NPS 24 : +1.5mm - 0.8mm.
• Tiêu chuẩn ASME B16.20 không hỗ trợ.
Mặt bích Class 400 có kích thước nhỏ hơn NPS 3.
Mặt bích Class 900 có kích thước nhỏ hơn NPS 2½.
• Không hỗ trợ mặt bích Class 400 có kích thước NPS 1/2 ~ NPS 3 (sử dụng Class 600 thay thế).
• Không hỗ trợ mặt bích Class 900 có kích thước NPS 1/2 ~ NPS 2½ (sử dụng Class 1500 thay thế).
• Không hỗ trợ mặt bích Class 2500 có kích thước NPS 14 hoặc lớn hơn.
| Class 150 NPS 1/2-24 | ||||
| NPS | Inner Ring | Sealing Element | Outer Ring | |
| Inside (d1) Dia. | Inside (d2) Dia. | Outside (d3) Dia. | Outside (d4) Dia. | |
| 1/2 | 14.2 | 19.1 | 31.8 | 47.8 |
| 3/4 | 20.6 | 25.4 | 39.6 | 57.2 |
| 1 | 26.9 | 31.8 | 47.8 | 66.8 |
| 1¼ | 38.1 | 47.8 | 60.5 | 76.2 |
| 1½ | 44.5 | 54.1 | 69.9 | 85.9 |
| 2 | 55.6 | 69.9 | 85.9 | 104.9 |
| 2½ | 66.5 | 82.6 | 98.6 | 124 |
| 3 | 81 | 101.6 | 120.7 | 136.7 |
| 4 | 106.4 | 127 | 149.4 | 174.8 |
| 5 | 131.8 | 155.7 | 177.8 | 196.9 |
| 6 | 157.2 | 182.6 | 209.6 | 222.3 |
| 8 | 215.9 | 233.4 | 263.7 | 279.4 |
| 10 | 268.2 | 287.3 | 317.5 | 339.9 |
| 12 | 317.5 | 339.9 | 374.7 | 409.7 |
| 14 | 349.3 | 371.6 | 406.4 | 450.9 |
| 16 | 400.1 | 422.4 | 463.6 | 514.4 |
| 18 | 449.3 | 474.7 | 527.1 | 549.4 |
| 20 | 500.1 | 525.5 | 577.9 | 606.6 |
| 24 | 603.3 | 628.7 | 685.8 | 717.6 |
| NPS | Inside (d1) Dia. | Inside (d2) Dia. | Outside (d3) Dia. | Outside (d4) Dia. |
| Inner Ring | Sealing Element | Outer Ring |
| Class 300 NPS 1/2-24 | ||||
| NPS | Inner Ring | Sealing Element | Outer Ring | |
| Inside (d1) Dia. | Inside (d2) Dia. | Outside (d3) Dia. | Outside (d4) Dia. | |
| 1/2 | 14.2 | 19.1 | 31.8 | 54.1 |
| 3/4 | 20.6 | 25.4 | 39.6 | 66.8 |
| 1 | 26.9 | 31.8 | 47.8 | 73.2 |
| 1¼ | 38.1 | 47.8 | 60.5 | 82.6 |
| 1½ | 44.5 | 54.1 | 69.9 | 95.3 |
| 2 | 55.6 | 69.9 | 85.9 | 111.3 |
| 2½ | 66.5 | 82.6 | 98.6 | 130.3 |
| 3 | 81 | 101.6 | 120.7 | 149.4 |
| 4 | 106.4 | 127 | 149.4 | 181.1 |
| 5 | 131.8 | 155.7 | 177.8 | 215.9 |
| 6 | 157.2 | 182.6 | 209.6 | 251 |
| 8 | 215.9 | 233.4 | 263.7 | 308.1 |
| 10 | 268.2 | 287.3 | 317.5 | 362 |
| 12 | 317.5 | 339.9 | 374.7 | 422.4 |
| 14 | 349.3 | 371.6 | 406.4 | 485.9 |
| 16 | 400.1 | 422.4 | 463.6 | 539.8 |
| 18 | 449.3 | 474.7 | 527.1 | 596.9 |
| 20 | 500.1 | 525.6 | 577.9 | 654.1 |
| 24 | 603.3 | 628.7 | 685.8 | 774.7 |
| NPS | Inside (d1) Dia. | Inside (d2) Dia. | Outside (d3) Dia. | Outside (d4) Dia. |
| Inner Ring | Sealing Element | Outer Ring |
SPIRAL WOUND GASKETS ASME B16.20 CLASS 400
| Class 400 NPS 4-24 | ||||
| NPS | Inner Ring | Sealing Element | Outer Ring | |
| Inside (d1) Dia. | Inside (d2) Dia. | Outside (d3) Dia. | Outside (d4) Dia. | |
| 4 | 102.6 | 120.7 | 149.4 | 177.8 |
| 5 | 128.3 | 147.6 | 177.8 | 212.9 |
| 6 | 154.9 | 174.8 | 209.6 | 247.7 |
| 8 | 205.7 | 225.6 | 263.7 | 304.8 |
| 10 | 255.3 | 274.6 | 317.5 | 358.9 |
| 12 | 307.3 | 327.2 | 374.7 | 419.1 |
| 14 | 342.9 | 362 | 406.4 | 482.6 |
| 16 | 389.9 | 412.8 | 463.6 | 536.7 |
| 18 | 438.2 | 469.9 | 527.1 | 593.9 |
| 20 | 489 | 520.7 | 577.9 | 647.7 |
| 24 | 590.6 | 628.7 | 685.8 | 768.4 |
| NPS | Inside (d1) Dia. | Inside (d2) Dia. | Outside (d3) Dia. | Outside (d4) Dia. |
| Inner Ring | Sealing Element | Outer Ring |
| Class 600 NPS 1/2-24 | ||||
| NPS | Inner Ring | Sealing Element | Outer Ring | |
| Inside (d1) Dia. | Inside (d2) Dia. | Outside (d3) Dia. | Outside (d4) Dia. | |
| 1/2 | 14.2 | 19.1 | 31.8 | 54.1 |
| 3/4 | 20.6 | 25.4 | 39.6 | 66.8 |
| 1 | 26.9 | 31.8 | 47.8 | 73.2 |
| 1¼ | 38.1 | 47.8 | 60.5 | 82.6 |
| 1½ | 44.5 | 54.1 | 69.9 | 95.3 |
| 2 | 55.6 | 69.9 | 85.9 | 111.3 |
| 2½ | 66.5 | 82.6 | 98.6 | 130.3 |
| 3 | 78.7 | 101.6 | 120.7 | 149.4 |
| 4 | 102.6 | 120.7 | 149.4 | 193.8 |
| 5 | 128.3 | 147.6 | 177.8 | 241.3 |
| 6 | 154.9 | 174.8 | 209.6 | 266.7 |
| 8 | 205.7 | 225.6 | 263.7 | 320.8 |
| 10 | 255.3 | 274.6 | 317.5 | 400.1 |
| 12 | 307.3 | 327.2 | 374.7 | 457.2 |
| 14 | 342.9 | 362 | 406.4 | 492.3 |
| 16 | 389.9 | 412.8 | 463.6 | 565.2 |
| 18 | 438.2 | 469.9 | 527.1 | 612.9 |
| 20 | 489 | 520.7 | 577.9 | 682.8 |
| 24 | 590.6 | 628.7 | 685.8 | 790.7 |
| NPS | Inside (d1) Dia. | Inside (d2) Dia. | Outside (d3) Dia. | Outside (d4) Dia. |
| Inner Ring | Sealing Element | Outer Ring |
| Class 900 NPS 3-24 | ||||
| NPS | Inner Ring | Sealing Element | Outer Ring | |
| Inside (d1) Dia. | Inside (d2) Dia. | Outside (d3) Dia. | Outside (d4) Dia. | |
| 3 | 78.7 | 95.3 | 120.7 | 168.4 |
| 4 | 102.6 | 120.7 | 149.4 | 206.5 |
| 5 | 128.3 | 147.6 | 177.8 | 247.7 |
| 6 | 154.9 | 174.8 | 209.6 | 289.1 |
| 8 | 196.9 | 222.3 | 257.3 | 358.9 |
| 10 | 246.1 | 276.4 | 311.2 | 435.1 |
| 12 | 292.1 | 323.9 | 368.3 | 498.6 |
| 14 | 320.8 | 355.6 | 400.1 | 520.7 |
| 16 | 374.7 | 412.8 | 457.2 | 574.8 |
| 18 | 425.5 | 463.6 | 520.7 | 638.3 |
| 20 | 482.6 | 520.7 | 571.5 | 698.5 |
| 24 | 590.6 | 628.7 | 679.5 | 838.2 |
| NPS | Inside (d1) Dia. | Inside (d2) Dia. | Outside (d3) Dia. | Outside (d4) Dia. |
| Inner Ring | Sealing Element | Outer Ring |
| Class 1500 NPS 1/2-24 | ||||
| NPS | Inner Ring | Sealing Element | Outer Ring | |
| Inside (d1) Dia. | Inside (d2) Dia. | Outside (d3) Dia. | Outside (d4) Dia. | |
| 1/2 | 14.2 | 19.1 | 31.8 | 63.5 |
| 3/4 | 20.6 | 25.4 | 39.6 | 69.9 |
| 1 | 26.9 | 31.8 | 47.8 | 79.5 |
| 1¼ | 33.3 | 39.6 | 60.5 | 88.9 |
| 1½ | 41.4 | 47.8 | 69.9 | 98.6 |
| 2 | 52.3 | 58.7 | 85.9 | 143 |
| 2½ | 63.5 | 69.9 | 98.6 | 165.1 |
| 3 | 78.7 | 92.2 | 120.7 | 174.8 |
| 4 | 97.8 | 117.6 | 149.4 | 209.6 |
| 5 | 124.5 | 143 | 177.8 | 254 |
| 6 | 147.3 | 171.5 | 209.6 | 282.7 |
| 8 | 196.9 | 215.9 | 257.3 | 352.6 |
| 10 | 246.1 | 266.7 | 311.2 | 435.1 |
| 12 | 292.1 | 323.9 | 368.3 | 520.7 |
| 14 | 320.8 | 362 | 400.1 | 577.9 |
| 16 | 374.7 | 406.4 | 457.2 | 641.4 |
| 18 | 425.5 | 463.6 | 520.7 | 704.9 |
| 20 | 476.3 | 514.4 | 571.5 | 755.7 |
| 24 | 577.9 | 616 | 679.5 | 901.7 |
| NPS | Inside (d1) Dia. | Inside (d2) Dia. | Outside (d3) Dia. | Outside (d4) Dia. |
| Inner Ring | Sealing Element | Outer Ring |
| Class 300 NPS 1/2-12 | ||||
| NPS | Inner Ring | Sealing Element | Outer Ring | |
| Inside (d1) Dia. | Inside (d2) Dia. | Outside (d3) Dia. | Outside (d4) Dia. | |
| 1/2 | 14.2 | 19.1 | 31.8 | 69.9 |
| 3/4 | 20.6 | 25.4 | 39.6 | 76.2 |
| 1 | 26.9 | 31.8 | 47.8 | 85.9 |
| 1¼ | 33.3 | 39.6 | 60.5 | 104.9 |
| 1½ | 41.4 | 47.8 | 69.9 | 117.6 |
| 2 | 52.3 | 58.7 | 85.9 | 146 |
| 2½ | 63.5 | 69.9 | 98.6 | 168.4 |
| 3 | 78.7 | 92.2 | 120.7 | 196.9 |
| 4 | 97.8 | 117.6 | 149.4 | 235 |
| 5 | 124.5 | 143 | 177.8 | 279.4 |
| 6 | 147.3 | 171.5 | 209.6 | 317.5 |
| 8 | 196.9 | 215.9 | 257.3 | 387.4 |
| 10 | 246.1 | 270 | 311.2 | 476.3 |
| 12 | 292.1 | 317.5 | 368.3 | 549.4 |
| NPS | Inside (d1) Dia. | Inside (d2) Dia. | Outside (d3) Dia. | Outside (d4) Dia. |
| Inner Ring | Sealing Element | Outer Ring |