ISO-KF · SEALING COMPONENTS
ISO-KF SS303 Centering Ring
ZEROVAC ISO-KF SS303 centering rings align ISO-KF flanges on the correct axis and provide reliable vacuum sealing with an elastomer O-ring. Five elastomer options support selection for different process conditions.
- Connection Standard
- ISO-KF
- Nominal Sizes
- DN 10 - DN 50
- Ring Material
- AISI 303 / EN 1.4305
- O-ring Options
- CR, EPDM, FPM, NBR, VMQ
- Leak Rate
- < 1 × 10⁻⁹ mbar·L/s
TECHNICAL DRAWING · DIMENSIONS · ORDER CODES
DN sizes 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 | EPDM | FPM | NBR | VMQ |
|---|---|---|---|---|---|---|---|---|---|
| DN 10 | 12 | 10 | 8 | 3.9 | 211672 | 211686 | 211065 | 211679 | 211693 |
| DN 16 | 17 | 16 | 8 | 3.9 | 211673 | 211687 | 211066 | 211680 | 211694 |
| DN 20 | 22 | 20 | 8 | 3.9 | 211674 | 211688 | 211067 | 211681 | 211695 |
| DN 25 | 26 | 25 | 8 | 3.9 | 211675 | 211689 | 211068 | 211682 | 211696 |
| DN 32 | 34 | 32 | 8 | 3.9 | 211676 | 211690 | 211069 | 211683 | 211697 |
| DN 40 | 41 | 40 | 8 | 3.9 | 211677 | 211691 | 211070 | 211684 | 211698 |
| DN 50 | 52 | 50 | 8 | 3.9 | 211678 | 211692 | 211071 | 211685 | 211699 |
CR: NeopreneFPM: VitonVMQ: Silicone
INSTALLATION NOTE
Use the centering ring for the correct DN size with suitable ISO-KF flanges, an O-ring and a clamp.