Spiral wound gasket for EN flange connection is constructed by metal winding on filler, with centering ring and (or not) inner ring. Under the bolt pressing force, the gasket fills the gap between the flange sealing faces to achieve the sealing purpose.
Available size for type C and type D gasket (PN 16 flange)
| Size | Flange type | Filler material | Metal winding material | Ref. No. |
|---|---|---|---|---|
| 1/2″ / DN15 / 21.3mm | PN 16, FF / RF | Flexible graphite / PTFE / Non asbestos | AISI 304 / AISI 316L / Carbon steel | NE4901-PN16 |
| 3/4″ / DN20 / 26.9mm | PN 16, FF / RF | Flexible graphite / PTFE / Non asbestos | AISI 304 / AISI 316L / Carbon steel | NE4902-PN16 |
| 1″ / DN25 / 33.7mm | PN 16, FF / RF | Flexible graphite / PTFE / Non asbestos | AISI 304 / AISI 316L / Carbon steel | NE4903-PN16 |
| 1-1/4″ / DN32 / 42.4mm | PN 16, FF / RF | Flexible graphite / PTFE / Non asbestos | AISI 304 / AISI 316L / Carbon steel | NE4904-PN16 |
| 1-1/2″ / DN40 / 48.3mm | PN 16, FF / RF | Flexible graphite / PTFE / Non asbestos | AISI 304 / AISI 316L / Carbon steel | NE4905-PN16 |
| 2″ / DN50 / 60.3mm | PN 16, FF / RF | Flexible graphite / PTFE / Non asbestos | AISI 304 / AISI 316L / Carbon steel | NE4906-PN16 |
| 2-1/2″ / DN65 / 76.1mm | PN 16, FF / RF | Flexible graphite / PTFE / Non asbestos | AISI 304 / AISI 316L / Carbon steel | NE4907-PN16 |
| 3″ / DN80 / 88.9mm | PN 16, FF / RF | Flexible graphite / PTFE / Non asbestos | AISI 304 / AISI 316L / Carbon steel | NE4908-PN16 |
| 4″ / DN100 / 114.3mm | PN 16, FF / RF | Flexible graphite / PTFE / Non asbestos | AISI 304 / AISI 316L / Carbon steel | NE4909-PN16 |
| 5″ / DN125 / 139.7mm | PN 16, FF / RF | Flexible graphite / PTFE / Non asbestos | AISI 304 / AISI 316L / Carbon steel | NE4910-PN16 |
| 6″ / DN150 / 165.1 / 168.3mm | PN 16, FF / RF | Flexible graphite / PTFE / Non asbestos | AISI 304 / AISI 316L / Carbon steel | NE4911-PN16 |
| 8″ / DN200 / 219.1mm | PN 16, FF / RF | Flexible graphite / PTFE / Non asbestos | AISI 304 / AISI 316L / Carbon steel | NE4912-PN16 |
| 10″ / DN250 / 273.0mm | PN 16, FF / RF | Flexible graphite / PTFE / Non asbestos | AISI 304 / AISI 316L / Carbon steel | NE4913-PN16 |
| 12″ / DN300 / 323.9mm | PN 16, FF / RF | Flexible graphite / PTFE / Non asbestos | AISI 304 / AISI 316L / Carbon steel | NE4914-PN16 |
| 14″ / DN350 / 355.6mm | PN 16, FF / RF | Flexible graphite / PTFE / Non asbestos | AISI 304 / AISI 316L / Carbon steel | NE4915-PN16 |
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