KF - ISO - NW Flange Fittings (Centering Rings)

Used to center and seal two flanges, in standard NW, KF and ISO sizes, centering ring flange fittings provide reliable vacuum seals within critical semiconductor environments.

PPE centering rings are available in both aluminium and stainless steel, and can be combined with O-ring materials commonly used in semiconductor wafer processing systems.  PPE O-ring materials include:-

  • FKM - up to 250°C (482°F) 
  • Nanofluor® - ultra-high purity, up to 260°C (500°F) 
  • Kimura® - high purity, up to +300°C (572°F) 
  • Perlast® FFKM - high purity, aggressive media, up to 325°C (617°F) 

See the table of standard sizes below.

Trapped centering adaptors are available on request.

How can we help?  Contact us to discuss your requirements.

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Part numberPNEUROP
6606
KF RefISO
2861-1
O-ring Dimensions (mm)
AluminumStainless SteelInner Diameter+/-Cross Section+/-
NW16----ALNW16----SSNW16KF16-180.250.1
NW25----ALNW25----SSNW25KF25-280.350.1
NW40----ALNW40----SSNW40KF40-420.450.1
NW50----ALNW50----SSNW50KF50-550.550.1
NW63----ALNW63----SSNW63-ISO6375.570.650.1
NW80----ALNW80----SSNW80-ISO8088.270.650.1
NW100----ALNW100----SSNW100-ISO100107.320.850.1
NW160----ALNW160----SSNW160-ISO160158.121.050.1
NW200----ALNW200----SSNW200-ISO200215.271.350.1
NW250----ALNW250----SSNW250-ISO250266.071.550.1
NW320----ALNW320----SSNW320-ISO320316.871.550.1

Other products for semiconductor applications

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