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Home - News - Common Factors Affecting Rubber Seal Performance in Mechanical Equipment

Common Factors Affecting Rubber Seal Performance in Mechanical Equipment

July 20, 2023

During the operation of seals in mechanical equipment, it is common to encounter various undesirable factors such as cracking, deformation, and leakage. These issues are often related to the choice of sealing material, including factors like temperature resistance, hardness, tensile strength, elongation, resilience, and compression set performance. Let's discuss six common rubber seal performance factors related to sealing materials:

Temperature Resistance: The operating temperature range of rubber seals is crucial to consider. It should not only withstand high temperatures (heat resistance) but also function well in cold conditions (cooling performance, low temperature resistance). Sealing materials can change at certain temperatures, leading to performance alterations or even cracks in extreme conditions.

Hardness Resistance: Elastomer rubber sealing materials come in different hardness points, typically measured on the Shore hardness scale (60-90 hardness units). A harder sealing ring can resist extrusion, but softer rings may have better burst or sliding friction performance.

Tensile Strength Performance: Elastomer sealing materials generally have lower tensile strength compared to other types of seals. A decrease in tensile strength due to environmental factors or incorrect pairing values can lead to damage to the elastomer.

Wave Pressure Seal Material: The sealing material's resistance to temperature is crucial when subjected to wave pressure. Changes in temperature can affect the seal's reliability, performance, and potential for failure. Both high and low-temperature resistance should be considered.

Hydraulic Pressure: The hardness resistance of the seal material is relevant to its ability to withstand hydraulic pressure. Different hardness levels impact the seal's ability to resist extrusion or friction during operation.

Tensile Strength Performance (Again): As mentioned earlier, the tensile strength of elastomer sealing materials is generally lower than other types. Damage to the elastomer can occur when the tensile strength is compromised due to incorrect measurement or pairing values.

To ensure effective sealing performance, proper selection of sealing materials based on their temperature resistance, hardness, tensile strength, and other relevant factors is essential. Choosing the right sealing material will help prevent issues like cracking, deformation, and leakage, ensuring the reliable operation of mechanical equipment.