Уплотнительное кольцо № 208 Caterpillar 3939711

An O-ring seal for the engine head valve stem is a sealing component, ensuring a reliable and leak-free seal between the valve stem and its housing. This rubber ring prevents oil leaks, maintaining optimal engine performance. Its durable and flexible design enhances the longevity of the valve assembly, reducing wear and ensuring efficient combustion.Attributes:• Ensuring a tight and effective seal.• Designed for extended durability and consistent performance.• Temperature resilience.• Made from durable and heat-resistant materials.• Ring must pass through 372 diameters without taking a permanent set.• Minimum gap when installed in groove 378.5 diameter.Applications: An O-ring seal prevents external contaminants, such as dirt or debris, from entering the engine and potentially causing damage.