The Flint & Walling Ring/Sq Cut features an inner diameter of .636 inches, designed for various sealing and fastening applications. This high-quality ring is manufactured to precise specifications, ensuring a perfect fit for your needs. Its durable construction provides excellent resistance to wear and tear, making it suitable for both industrial and residential use. Ideal for use in plumbing, automotive, and machinery applications, this ring meets industry standards for quality and reliability, ensuring optimal performance in any setting.