- Tensile strength class 5.8 (500 N/mm²)
- ultrasonically and tensile tested
- zinc plated, nano-passivated (silver / yellowish)
- Type A: without gasket
- Type AC: with gasket in copper
- Type AA: with gasket in aluminium
The gaskets in types AC and AA correspond to the gaskets DIN 7603, type A (flat gaskets).
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