The Freudenberg-NOK U959BB FKM O-ring features a diameter of 1.500 inches and a thickness of 0.187 inches, rated at 75 Shore A hardness. This O-ring is specifically designed for applications requiring excellent sealing capabilities under high temperatures and aggressive chemicals. Its durable FKM material provides superior resistance to wear and aging, making it ideal for use in automotive, aerospace, and industrial applications. The U959BB meets stringent industry standards, ensuring compatibility and reliability.