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.
| Part number | PNEUROP 6606 | KF Ref | ISO 2861-1 | O-ring Dimensions (mm) | ||||
| Aluminum | Stainless Steel | Inner Diameter | +/- | Cross Section | +/- | |||
| NW16----AL | NW16----SS | NW16 | KF16 | - | 18 | 0.2 | 5 | 0.1 |
| NW25----AL | NW25----SS | NW25 | KF25 | - | 28 | 0.3 | 5 | 0.1 |
| NW40----AL | NW40----SS | NW40 | KF40 | - | 42 | 0.4 | 5 | 0.1 |
| NW50----AL | NW50----SS | NW50 | KF50 | - | 55 | 0.5 | 5 | 0.1 |
| NW63----AL | NW63----SS | NW63 | - | ISO63 | 75.57 | 0.6 | 5 | 0.1 |
| NW80----AL | NW80----SS | NW80 | - | ISO80 | 88.27 | 0.6 | 5 | 0.1 |
| NW100----AL | NW100----SS | NW100 | - | ISO100 | 107.32 | 0.8 | 5 | 0.1 |
| NW160----AL | NW160----SS | NW160 | - | ISO160 | 158.12 | 1.0 | 5 | 0.1 |
| NW200----AL | NW200----SS | NW200 | - | ISO200 | 215.27 | 1.3 | 5 | 0.1 |
| NW250----AL | NW250----SS | NW250 | - | ISO250 | 266.07 | 1.5 | 5 | 0.1 |
| NW320----AL | NW320----SS | NW320 | - | ISO320 | 316.87 | 1.5 | 5 | 0.1 |
