The OBS O-Ring, made from premium Viton, is specifically designed for 3" aluminum valve pistons. This O-Ring provides an exceptional seal, ensuring optimal performance in fluid transfer systems. Viton is renowned for its resistance to heat, chemicals, and wear, making it an ideal choice for demanding applications. The precise dimensions of this O-Ring ensure compatibility with various valve systems, enhancing reliability and efficiency. Whether used in industrial or commercial settings, this O-Ring is essential for maintaining system integrity and preventing leaks.