How is the Sealing Performance of an O-ring Assessed?

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　　Want to know the sealing performance of O-rings? This involves many aspects. The sealing performance evaluation of O-rings is a comprehensive consideration process, mainly including the following key aspects:

　　1. Appearance inspection‌: First, we will check the appearance of the O-ring to ensure that there are no obvious defects, such as bubbles, cracks, impurities, etc., which may affect the sealing effect.

　　2. Dimension measurement‌: Use professional tools to measure the inner diameter, outer diameter and cross-sectional diameter of the O-ring to ensure that they meet the design requirements and tolerance range, which is the basis of sealing performance.

　　3. Hardness test‌: Measure the hardness of the O-ring by using a Shore durometer, and determine the appropriate hardness range according to the material properties and design requirements to ensure the reliability of the seal.

　　4. Tensile and elongation test‌: Evaluate the elasticity and durability of the O-ring, which is the key to maintaining its sealing effect in long-term use.

　　5. Compression permanent deformation test‌: After being kept in a compressed state for a certain period of time, measure the deformation degree of the O-ring to evaluate its sealing effect after long-term use.

　　‌6. Air tightness or liquid tightness test‌: Install the O-ring into the corresponding tooling and perform air tightness or liquid tightness test to ensure that there is no leakage under working pressure.

　　7‌. Aging resistance test‌: By simulating high temperature, low temperature, oil immersion, chemical media and other environments, verify the aging resistance of the O-ring to ensure that it can maintain the sealing effect under various harsh conditions.

　　The sealing performance evaluation of the O-ring is a comprehensive and rigorous process involving multiple aspects of testing and inspection. We at Shanfeng Special Rubber Products Co., Ltd. always strictly follow these standards for evaluation to ensure that the O-rings we provide have excellent sealing performance.