FLEXSEAL® RWI Spiral Wound Gasket

Style RWI features an inner ring, spiral winding, filler material, and a centering ring for use in higher pressure applications. 


  • Durable; easy installation and removal
  • Seals pressures to flange ratings, in accordance with ASME B16.5 and B16.47
  • Suited to temperatures from cryogenic to 2000°F / 1093°C, depending on metal and filler
  • Guide ring simplifies centering of sealing element on the flange face
  • Custom-tailored solutions accommodate a variety of conditions by combining various metals and filler materials
  • Suitable for raised face flanges up to class 2500# flanges
  • Inners rings are provided standard for ASME B16.20 unless otherwise specified by the customer
  • Inner ring can help shield sealing elements from erosion caused by abrasive media


When ordering specify:

  • Nominal pipe size and pressure rating
  • Inner ring material
  • Winding material
  • Filler material
  • Centering ring material
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