Experience superior sealing performance with this versatile rubber O-ring, designed to fit a range of plumbing and industrial applications. Measuring 9/16 inches in outer diameter and 3/8 inches in inner diameter, with a thickness of 3/32 inches, these O-rings are ideal for preventing leaks and ensuring a tight fit. Each pack contains 20 durable rings, making them a cost-effective solution for both professionals and DIY enthusiasts looking to maintain or repair various systems.