Final answer:
To prevent a packing ring from breaking, lubricating it and cooling it through submersion in water can help reduce friction and prevent overheating.
Step-by-step explanation:
A packing ring is a type of seal used in various applications, such as in pumps or valves, to prevent leaks. To prevent a packing ring from breaking, it is important to choose the correct material for the ring that can withstand the operating conditions.
One way to prevent a packing ring from breaking is by lubricating it. This helps reduce friction between the ring and the shaft or housing, reducing the likelihood of breakage.
Another method is to cool the ring by submerging it in water. Cooling helps prevent overheating and extends the life of the packing ring.