The addition of cerium oxide could improve evidently the heat stability of the silicone rubber stock with exceptional hardness.

For a basic soup you'll need about 7oz of fresh nettle tips (pick them wearing rubber gloves). Add 1lb of potatoes (peeled and cubed), a dash of cream and about four cups of stock.

Rubber rings, no problem. But the plunger is out of stock. However, I can make a special order for you.