ISO-KF · SEALING COMPONENTS
ISO-KF Aluminium External Centering Ring
ZEROVAC ISO-KF aluminium external centering rings position the elastomer O-ring concentrically in ISO-KF flange connections. The lightweight Aluminium 6026 ring is available in four size groups and five elastomer options.
- Connection Standard
- ISO-KF
- Size Groups
- DN 10-16 / 20-25 / 32-40 / 50
- Ring Material
- Aluminium 6026
- O-ring Options
- CR, FPM, NBR, EPDM, VMQ
- Leak Rate
- < 1 × 10⁻⁹ mbar·L/s
TECHNICAL DRAWING · DIMENSIONS · ORDER CODES
Size groups and elastomer ordering codes
A, B, C and D are identified in the cross-section drawing. All dimensions are in millimetres.
Scroll horizontally to review every published dimension and order code.
| ISO-KF | A (mm) | B (mm) | C (mm) | D (mm) | CR | FPM | NBR | EPDM | VMQ |
|---|---|---|---|---|---|---|---|---|---|
| DN 10-16 | 32 | 30.2 | 7 | 3.9 | 211081 | 211085 | 211700 | 211704 | 211708 |
| DN 20-25 | 42 | 40.2 | 7 | 3.9 | 211082 | 211086 | 211701 | 211705 | 211709 |
| DN 32-40 | 57 | 55.2 | 7 | 3.9 | 211083 | 211087 | 211702 | 211706 | 211710 |
| DN 50 | 77 | 75.2 | 7 | 3.9 | 211084 | 211088 | 211703 | 211707 | 211711 |
CR: NeopreneFPM: VitonVMQ: Silicone
INSTALLATION NOTE
Use the external centering ring for the correct size group with suitable ISO-KF flanges and a clamp; keep all sealing surfaces clean.