Danco 11/16 in. OD x 9/16 in. ID, Rubber, #54 O-Ring, 1 per bag, 35768B O-Ring Dimensions: 11/16 in. OD x 9/16 in. ID x 1/16 in. wall thickness Danco O-Ring #54: Compatible with American Standard Push-Pull Bath faucets These tough, pliable Buna-Nitrile Rubber (NBR) O-Rings help eliminate leaks, prevent faucet drips and provide long-term use for your plumbing needs O-rings have high abrasive and a high level of tempature resistance that will withstand heat between a temperature range of 86F to 248F (-30C to 120C) Danco o-rings are widely used by plumbeing proffesionals and DIY homeowners alike to prevent plumbing issues Includes 1 O-Ring per bag for faucet repair