Leader Spiral Wound Gasket Type SR
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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. Most used filler materials are Graphite and PTFE or LeaderTHERM NXT 1000 (high temp. modified Phlogopite). Due to the gasket construction, SWG’s offer high compressibility and recovery. Leader Style SR SWG’s are provided with an outer guide ring. The SR gaskets are suitable for ASME B16.5 raised faced flanges up to 600lbs and for EN/DIN flanges up to PN40. We strongly recommend to use SRI gaskets with inner guide ring in all circumstances.
Downloads
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 |
| min Seating stress [Qmin(L 0,01), mg/(s*m)] at RT 40 bar [N/mm2] | 33 |
| Gasket required flange roughness [Ra micron] | 3,2-6,3 |
| Gasket required flange roughness [RMS] | 125-250 |
| max Seating stress [Qsmax bei RT EN13555] [n/mm2] | 300 |
| 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 SI
The sealing element with inner ring. The “SI” SWG’s are manufactured with an inner 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....
