O-rings get lost periodically and get warped/worn out over time. A damaged O-ring,(or no faucet O-ring, at all) means a poor seal, leading to a leaky mess. Always have a spare O-ring on hand! Faucet O-rings help eliminate faucet leaks and provide a positive shut off. Danco's Rubber Faucet O-ring Assortment helps not only the Plumbing Professional, but the everyday DIY'er and the beveled design allows for full water flow. These O-rings (also known as faucet gaskets or seals) are made from a high-quality rubber and this assortment includes the 12 most popular sizes. Danco O-rings are abrasive resistance and temperature resistance and will help provide long-term use for your plumbing needs. This O-ring assortment kit is perfect for your faucet repair. Color: Black.