The Freudenberg-NOK DN040 O-Rings are designed for use with DIN11851 connections, featuring a size of 1.5 inches. Made from high-quality NBR material, these O-Rings provide excellent sealing capabilities in various applications, including food and beverage processing. Their durable construction ensures resistance to oils, chemicals, and temperature variations, making them suitable for demanding environments. These O-Rings meet industry standards for quality and reliability, ensuring optimal performance in your systems.