Is gas tightness possible with electrical connectors?

Gas-tight connections are not only possible with electrical connectors but critical to prevent any remaining gaps. Whether insulated terminals, plug connectors, butt connectors, or another form is used, the conductor and connector must be pressed and crimped together tight enough that all gaps are eliminated. In the United States, testing methods such as low level contact resistance confirm proper crimps have occured by measuring performance after exposure to corrosive elements detailed in EIA-364-36A

In Europe where end ferrules are utilized, it is possible for gaps to exist after crimping. This is occurs with the thin-walled copper (0.15mm) of the end ferrule releasing after a closed crimping plier is opened and is not typical for the thicker-walled versions. The crimp connection is considered acceptable if the following criteria is met: One, the withdrawal values of the crimped ferrule match values in DIN EN 60352-2. Two, volume resistance for the cross-section based on IEC 60512-2 Test 2 does not exceed the values specified in DIN 60352-2 before and after stress tests. Test examples must be stored as it would be wired in an industrial setting per DIN 50018 Climate Level SFW 0.2 S.

Our wire ferrule pliers meet the crimp connection requires outlined in the previous paragraph.