What type of seal is commonly used in faucets to prevent leaking?

The O-ring seal is commonly used in faucets to prevent leaking due to its effectiveness in creating a tight, water-resistant seal around various components. O-rings are made from flexible materials such as rubber or silicone, allowing them to compress effectively between two surfaces, like the faucet body and the valve stem. This compression helps to eliminate any gaps where water could escape, ensuring that the faucet operates without leaks.

Additionally, O-rings can be easily replaced when worn out, making them a practical choice for long-term maintenance. They also come in various sizes and materials, allowing them to be versatile for different applications within plumbing fixtures. Their simple design and effectiveness make them a preferred option for faucet seals.