FLEXSEAL®RWI Spiral Wound Gasket for 18 Inch ASME B16.5 Class 900 Flange, 316L Stainless Steel Winding, THERMa-PUR® Filler, 316L Stainless Steel Outer Ring, 316L Stainless Steel Inner Ring

DFAR0303070318009
FLEXSEAL®RWI Spiral Wound Gasket for 18 Inch ASME B16.5 Class 900 Flange, 316L Stainless Steel Winding, THERMa-PUR® Filler, 316L Stainless Steel Outer Ring, 316L Stainless Steel Inner Ring
  • Shipping Weight: 0 lbs
  • Style/Model: RWI
  • Nominal Pipe Size Fraction (Inch): 18
  • Pipe Standard and Class: ASME B16.5 Class 900
  • Inner Ring Material: 316L Stainless Steel
  • Winding Material: 316L Stainless Steel
  • Filler Material: THERMa-PUR®
  • Outer Ring Material: 316L Stainless Steel
  • Compliances/Standards: DFARS Compliant, Fire Safe, REACH Compliant, RoHS Compliant
  • Brand: FLEXSEAL®
  • Compliances: REACH Compliant, RoHS Compliant, DFARS Compliant, Fire Safe
  • Flange Standards/Pressure Class: ASME B16.5 Class 900
  • Gasket Standard: ASME B16.20
  • Inner Ring Included: Yes
  • Inside Diameter (Inch): 16.750
  • Inside Diameter (mm): 425.45
  • Inside Diameter Inner Ring (inch): 16.750
  • Inside Diameter Inner Ring (mm): 425.45
  • Inside Diameter Seal (inch): 18.250
  • Inside Diameter Seal (mm): 463.55
  • Max Temperature (C): 760
  • Max Temperature (F): 1400
  • Min Temperature (C): 0
  • Min Temperature (F): 0
  • Nominal Pipe Size (inch): 18.000
  • Nominal Pipe Size DN (mm): 450.0
  • Outer Diameter Outer Ring (inch): 25.130
  • Outer Diameter Outer Ring (mm): 638.30
  • Outer Diameter Seal (inch): 20.500
  • Outer Diameter Seal (mm): 520.70
  • Outside Diameter (inch): 25.130
  • Outside Diameter (mm): 638.30
  • Pressure Class: 900
  • Thickness Compressed (inch): 0.125
  • Thickness Compressed (mm): 3.18
  • Thickness Uncompressed (inch): 0.175
  • Thickness Uncompressed (mm): 4.45
  • UPC Code: 191074835022
  • Primary Dimensional Unit of Measure: Imperial

The FLEXSEAL® RWI is engineered for ASME flanges with Inner Ring, metal windings, filler material, and a centering ring. Style RWI offers excellent general purpose performance for raised face flanges. Its durable construction and consistent compression deliver superior safety and exceptional sealing performance.

  • Overview

Features and Benefits:

  • 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