Feature●Resistant to water swell, steam and abrasion and Danco o-rings are widely used by plumbing professionals and DIY homeowners alike to prevent plumbing issues●Made from compound Nitrile Butadiene Rubber●These tough, pliable Buna-Nitrile Rubber (NBR) O-Rings help eliminate leaks, prevent faucet drips and provide long-term use for your plumbing needs●For faucet repair and High Quality Long Lasting Replacement O-Ring●extends life and quick troubleshooting, Replacing the O-ring gaskets can solve problems such as water leakingDescription ORing 5/16 Inch x 1/2 Inch x 3/32 Inch by Danco No 35711W