The Freudenberg-NOK 0.103" 70 VMQ O-Ring SI70A4 is engineered for superior sealing performance. With a diameter of 3.487 inches, this O-ring is crafted from VMQ (silicone rubber), providing exceptional resistance to extreme temperatures and various chemicals. Rated at 70 Shore A hardness, it ensures a tight seal in demanding applications. This O-ring meets industry standards, making it suitable for automotive, aerospace, and industrial uses. Its robust construction and precise sizing guarantee effective sealing, preventing leaks in critical systems.