The Viton O-Ring for Valve Stem in a 3" Aluminum Valve from Fill-Rite by Sotera Systems is a critical sealing component designed for optimal performance in fluid transfer applications. Made from high-quality Viton material, this O-ring offers excellent resistance to chemicals and temperature variations, ensuring a reliable seal. Its precise dimensions ensure a snug fit, preventing leaks and maintaining system integrity. This O-ring is compatible with various Fill-Rite valves, making it a versatile choice for professionals. It meets industry standards for quality and performance, making it essential for any fluid transfer system.