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  • Sealing element (D) combined with a centering ring (R) and an inner ring (I) which improves radial strength and protects the sealing element from erosion and inward buckling
  • Commonly used with standard Raised Face, Full Face type flanges and worn RTJ flange replacement gaskets
  • Inner rings are recommended for all spiral wound gaskets but are mandatory (ASME B16 20-2007) for all PTFE filled gaskets, NPS (Nominal Pipe Size) 24” and larger Class 900. NPS 12”, larger Class 1500 and NPS 4” and larger Class 2500

Additional information

Nominal Pipe Size

26”, 28”, 30”, 32”, 36”, 42”, 48”, 54”

Flange Rating

150, 300, 600


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