Optimize the performance and longevity of your plumbing fixtures with this durable rubber O-ring. Designed with precision, this O-ring measures 1-5/16 inches on the outer diameter and 1-1/16 inches on the inner diameter, ensuring a snug and reliable fit. Perfect for sealing leaks and preventing water damage, it's an essential component for any DIY enthusiast or professional plumber seeking quality and reliability in their repair projects.