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
(Petro-) Chemical Industry, Steam, On- and Offshore exploration, pipeline systems, pressure vessels and exchangers.
–
Spiral Wound Gaskets can be used in a wide variety of media, i.e. a pH range varying from 0-14. Application/ compatibility guide is available on request. Temperature from –450 °F up to 850 °F (steam up to 1200 °F)
Standard style S gaskets are normally manufactured according to particular customer drawings, or by given sizes. Gaskets can be manufactured in a thickness of .125″ / .175″ / .250″ / 285″. Different materials are available.
Spiral Wound Gaskets can be used in a wide variety of media, i.e. a pH range varying from 0-14. Application/ compatibility guide is available on request. Temperature from –450 °F up to 850 °F (steam up to 1200 °F).
TECHNICAL DATA
max Temperature [°F] | See material table below |
max Pressure [psi] | ASME B16.5 2500 Class |
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 |
Advice Seating stress at assembly [psi] | 12500 |
ROTT [Gb] | 926 |
ROTT [a] | 0.341 |
ROTT [Gs”] | 2.9 |
Contact
Leader Gasket
Global Headquarters: Houston, TX
850 Sens Road
La Porte, TX 77571
Contact Us
Phone: +1 281-542-0600