4 The EO2–FORM Connection
4.1 Introduction
EO2-FORM is the new high pressure formed tube Generation of the Tube Fittings Division Europe.
As with EO2-Plus, it is designed in to eliminate leakage in all fluid systems, by using elastomeric
sealing systems.
The common feature of all EO2-FORM connections are the EO2 seal elements (Dry Technology) as
well as the new cold forming process, that gives extreme rigidity and low tightening torques. The seals
are now also available in FPM (e.g. Viton®) for applications with higher temperatures or aggressive
media. Through EO2-FORM, elastomeric sealing technology is made available even where bite-type
connectors are not popular, like in hydraulic presses, cranes, lifts or ship canal locks. Compared to
welding or brazing, the EO2-FORM process is faster and easier. It does not require special tube
treatment, heating or chemicals.
EO2-FORM is designed for metric tube and fully interchangeable to the complete Ermeto Original
product range according to ISO 8434-1 / DIN 2353. EO2-FORM is available in "L"- and "S"-Series.
4.2 EO2-Form Features
Elastomeric sealing
The high volume elastomeric seal assures a hermetically sealed tube joint. It is located in between the
inner cone of the fitting body and the tube surface, thus blocking the only possible leak path.
Due its large cross section, the seal effectively compensates for all manufacturing tolerances between
the tube and fitting cone.
The sealing effect is pressure supported which makes the EO2-FORM fitting ideal for high pressure
applications. The static compression also eliminates air-ingress into the fluid system in vacuum
conditions.
Elastomerically sealed EO2-FORM fittings do not require any retightening even in heavy-duty
applications. Seal extrusion is prevented by proper housing without gaps or dead volume areas.
The sealing lip is bonded to a metallic support ring.
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