CeFiX® Systems (Recommended)

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EVAC CeFiX® connections, available in sizes NW16 to NW250, deliver EUHV leakproof seals in seconds. Developed entirely by EVAC, CeFiX® improves upon the traditional Conflat® (CF) system by refining the metal gasket compression method.

Unlike the CF system, where a knife edge creates a circular imprint that can shift upon reuse and cause vacuum leaks, CeFiX® uses a particle-free area-pressing mechanism. This design allows the seals to be reused and eliminates the leakage issues caused by the CF system's deep groove imprints. The wider overlapping area, with a 200 to 400µm cross-section, enhances thermocycling capability, handling temperatures from -271°C to +450°C conditions that typically compromise the CF knife edge after one cycle.

The CeFiX® system’s robust EUHV connection (<10E-11 mbar, <1 nPa) can withstand overpressures up to 300 bar when used with TÜV-approved chain clamps. Hard nickel seals, which resist CF knife edge penetration, are easily compressed with CeFiX®’s gear-type force-multiplying chain clamps. This technology requires only 50% of the CF system's compression force at the seal surface while ensuring gas-tight intermetallic diffusion bonds.

Features

Available Size
NW 16-63, NW 80-250
*Customized size available on request
Over Pressure
Up to 100 Bar
Temperature
-271C to 450C
Vacuum

Customised Solutions

We provide customized sealing solutions for chain clamps, flanges, seals, and more.
Click here to explore our product configurator.

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CeFiX® Chain Clamps

NW 16 to NW 250

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CeFiX® flanges

NW 16 to NW 250

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CeFiX® seals

NW 16 to NW 250

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CeFiX® fittings

NW 16 to NW 250

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