The Freudenberg-NOK 1.549" O-Ring, model S701B, is made from high-grade 70 VMQ (silicone) material, providing excellent sealing capabilities in high-temperature and chemical environments. With a cross-section of 0.103", this O-Ring is perfect for a variety of applications, including automotive and industrial uses. Its precise dimensions ensure a tight seal, enhancing the performance and longevity of your equipment. This product meets stringent industry standards, making it a reliable choice for demanding applications.