Check the listing for details. Cool Products Boiler Valve Seal Bung, White. Color: WHITE, Condition: New. Listed at 1176.76 USD. Versatile Seal: This boiler valve seal bung is designed to provide a secure, tight fit for various boiler and heating system applications. Compatible Materials: This seal is compatible with various materials commonly used in boiler systems, ensuring reliable performance and compatibility. This boiler valve seal bung is a crucial component for ensuring proper sealing and functionality in your boiler system. Made from high-quality materials, it is designed to withstand high temperatures and pressure, providing a reliable and durable solution. Its compact size and simple design make it easy to install and replace when necessary. Whether you need to repair or maintain your boiler, this seal bung is an essential item to have on hand. Prioritise safety and efficiency with this indispensable boi.