I had previously bought elsewhere sealing rings for a 6 cups coffee percolator. But they were too small in diameter 1 to 2 millimeters. This stainless steel espresso maker here are explicitly offered for 6 cups and have the exact matching diameter of 72 millimeters. I knew in advance not that different to the sizes in aluminum or stainless steel construction of the digester. Now I'm smarter. It would have been nice if 72 millimeters would have been explicitly mentioned in the product description the diameter, then I would have had certainty before ordering. So it was an order "on suspicion", but it's gone well. Since no separate shipping costs have been calculated, the price is really reasonable.
