The 'can' (that is the cover in which the crystal resides) is mounted on the socket's baseplate by soldering both together.

This type of sealing has now become obsolete, because of the much more reliable method of resistance welding. The main disadvantages of soldered types are among others increased ageing and deminished crystal performance due to the possibility of deposition of contaminants on the crystal surface during or after soldering.

The 'can' (that is the cover in which the crystal resides) is mounted on the socket's baseplate by applying a large electrical current through the area where both meet. Due to this current the metal around the seam melts end flows out to close the housing. Thus welded crystals present the finest we at Stabilix have to offer. Crystals manufactured in this manner are filled with dry nitrogen gas (inert gas) ensuring superior long term stability (reduces ageing). Furthermore no contaminants can be deposited during welding as is the possibility with soldered types. Sealing is hermetical. This means leakages of the inert gas out of the housing and diffusion of gasses from the outside in remain at a minimum.

The 'can' (that is the cover in which the crystal resides) is mounted on the socket's baseplate by pressing the one on the other. This method is known as cold welding.

This type of sealing has now become obsolete, because of the much more reliable method of resistance welding. The main disadvantages of cold welded types is the lack of hermetical sealing, inviting poor longterm stability (or increased ageing)