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Guide pour l'utilisation des joints Chromex

Assembly Guidelines

PTFE composite seals

The mechanical parts which will receive seals must be clean and without smudges or sharp edges which would risk to damage seals during the assembly.

The use of any sharp tool is deeply disadvised : cutter, screwdriver, etc.

PISTON seals

The Oring is placed first in the piston groove. Even if it is elastic, it is necessary to avoid stretching or twisting the Oring too much during the implementation.

To facilitate and secure the assembly, the PTFE part of the composite seal is placed in some hot water or hot oil (80/100°C max).

The PTFE seal is implemented thanks to a specific 2 parts tool. Chromex designs and produce plastic tools to facilitate the assembly of the composite piston seals.

The plastic parts guarantee a protection of the PTFE seal during all the assembly process.

After assembly when the PTFE seal returned at room temperature, a chamfered tube in both extremities is used to restore the initial shape of the seal, before definitive assembly.

montage_piston

Rod Seals

montage_coeur



To facilitate and secure the assembly, the PTFE part of the composite seal is placed in some hot water or hot oil (80/100°C max).

The PTFE seals needs to be fold inward (heart-shaped, fig. A).

When the groove is easily accessible the seal can be manually settled (fig. B)​

For deep grooves the PTFE seal is implemented thanks to a specific 2 parts tool.

Chromex designs and produce plastic tools to facilitate the assembly of the composite rod seals.

The plastic parts guarantee a protection of the PTFE seal during all the assembly process.

After assembly the seal is unfold in the groove. A chamfered shaft is used to restore the initial shape of the seal, before definitive assembly.

montage_tige

Polyurethan U seals

Montage joint U pince



The implementation of the seal is realized thanks to an installation tool which folds the seal in heart shape to facilitate the installation.

Chomex can offer installation tools kit to fit with a large range of diameters.

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