The 4" Viton Butterfly Valve Repair Kit by SANITUBE features a premium VITON seat and two nylon stem bushings, designed for effective valve maintenance. This kit is essential for ensuring the longevity and performance of your butterfly valves in various industrial applications. The Viton material provides superior resistance to harsh chemicals and high temperatures, making it suitable for demanding environments. With easy installation, this repair kit is compatible with standard 4" butterfly valves, ensuring seamless operation and reliability.