
ISO-KF · SEALING COMPONENTS
ISO-KF Centering Ring with Fine Filter
ZEROVAC ISO-KF centering rings with fine filter combine flange alignment and FPM vacuum sealing with a 0.004 mm AISI 316L filter for vacuum lines requiring fine particle control.
- Connection Standard
- ISO-KF
- Nominal Sizes
- DN 10 / 16 / 25 / 40 / 50
- Inner Ring
- AISI 303 / EN 1.4305
- Filter
- AISI 316L · 0.004 mm (4 µm)
- Seal
- FPM (Viton) O-ring
TECHNICAL DRAWING · DIMENSIONS · ORDER CODES
Fine-filter dimensions and ordering codes
A, B, C and D are shown 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) | Order Code |
|---|---|---|---|---|---|
| DN 10 | 12 | 9 | 8 | 3.9 | 211096 |
| DN 16 | 17 | 13 | 8 | 3.9 | 211097 |
| DN 25 | 26 | 22 | 8 | 3.9 | 211098 |
| DN 40 | 41 | 35.5 | 8 | 3.9 | 211099 |
| DN 50 | 52 | 45.7 | 8 | 3.9 | 211100 |
Pore size: 0.004 mm (4 µm)Retaining ring: Stainless steel / EN 1.4122Seal: FPM (Viton)
INSTALLATION NOTE
Install the ring with ISO-KF flanges of the correct DN size and a suitable clamp; protect the fine-filter surface from mechanical damage during assembly.
