Membrane type - It is the easiest type to manufacture as to material and construction costs. It is especially used when the fitting space is reduced. Welds on the inside only are possible, unless an M flange according to DIN 2526 is fitted. Dismantling and re-welding are also possible.
This type of weld ring gasket does not prevent crevice corrosion to occur. Post-welding dismantling and re-welding are possible.
The same as WR01. Post-welding dismantling and re-welding are hardly possible.
Welds on the inside can be possibly executed as additional fastening and only if continuously welded. Post-welding dismantling and re-welding are possible only as shown in the picture by means of a 2 mm cutting-off wheel.
Welds on the inside are to be executed as shown in the picture so as to avoid crevice corrosion, whereas external welds are not possible. This type of weld ring gasket allows dismantling and re-welding with a 2 mm cutting-off wheel.
The auxiliary sealing is made directly on one of the weld ring gasket halves.
An auxiliary spiral wound gasket is fitted inside the weld ring gasket.
An auxiliary kammprofile gasket is fitted inside the weld ring gasket.