Manufactured by Western Enterprises, this flat washer is an essential component designed specifically for use with CGA 320 and 330 gas connections. Made from durable PTFE, it provides excellent performance in applications involving carbon dioxide and other non-corrosive gases, ensuring a reliable seal under pressures up to 3000 PSIG. With its dimensions of 0.250-inch inner diameter and 0.703-inch outer diameter, this washer is suitable for various industrial, welding, and laboratory environments, making it a versatile choice for professionals in need of dependable gas service components.