Leader Spiral Wound Gasket Type SI
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Description
Designed more than 100 years ago, Spiral Wound Gaskets (SWG’s) are widely used as high integrity and sustainable gaskets. The sealing element is manufactured from preformed, v-shaped metallic windings with intermediate soft sealing fillers. As standard metallic material for winding and inner ring SS316L is used and for the soft fillers, graphite, PTFE or LeaderTHERM NXT 1000 (high temp. modified Phlogopite). Due to the gaskets construction, SWG’s offer high compressibility and recovery. Leader Style SI SWG’s are provided with an inner ring. The SI gaskets are suitable for ASME B16.5 tongue and groove or male / female (Spigot to Recess) flanges up
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Product Data SheetMetallic materialsApplication
Chemical Compatiblity
Delivery Options
Temperature
Certificates
- EN10.204 3.1
Sealing Characteristics
- blow out safe
- low leak rate
- Firesafe
- Design suitable for fluctuating temperatures and pressures
- broad chemical resistance (pending on the metallic materials and filler)
- wide seating stress range
- non sticking to the flanges
| max Temperature [°C] | See material table below |
| max Pressure [bar] | 200 |
| Minimum initial stress [DIN E 2505 part 2] [N/mm2] | 50 |
| Maximum initial stress [DIN E 2505 part 2] [N/mm2] | 300 |
| M-Value | 3 |
| Y- Value [psi] | 10000 |
| Gasket required flange roughness [Ra micron] | 3,2-6,3 |
| Gasket required flange roughness [RMS] | 125-250 |
| ROTT [Gb] | 926 |
| ROTT [a] | 0.341 |
| ROTT [Gs"] | 2.9 |
| min Temperature [°C] | See material table below |
Leader Spiral Wound Gasket Type SRI
The sealing element with inner- and outer guide ring. The “SRI” SWG’s are manufactured with an inner, outer guide ring, sealing element – winding material(SS316L, SS321…) and the soft fillers - graphite, PTFE, LeaderTHERM....
Leader Spiral Wound Gasket Type SR
The sealing element with outer guide ring. The “SR” SWG’s are manufactured with an outer guide ring, sealing element – winding material(SS316L, SS321…) and the soft fillers - graphite, PTFE, LeaderTHERM....
Leader Spiral Wound Gasket Type S
The sealing element - no inner- and outer guide ring. The “S” SWG´s are manufactured in sealing element - winding material (SS316L, SS321…) and the soft fillers - graphite, PTFE, LeaderTHERM....
