The Apollo Conbraco Industries 4000 Viton Spring Set features a durable design with a 55mm insert, ideal for various applications requiring reliable performance. This product is constructed from high-quality Viton material, ensuring excellent resistance to heat and chemicals. The spring set is designed for double stroke applications, making it versatile for different systems. With a focus on compliance, this item meets industry standards, ensuring safety and reliability in operation. Perfect for use in HVAC systems, plumbing, and industrial applications.