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Phoenix seals are materials or components that prevent leakage of fluids or solid particles from adjacent mating surfaces and prevent external contaminants such as dust and moisture from entering machinery. The recommended storage temperature for seals is below 30°C to avoid high-temperature aging. Seals can be divided into two main categories: static seals and dynamic seals. Their primary function is to prevent leakage of fluids or solid particles from adjacent mating surfaces and to prevent external contaminants such as dust and moisture from entering machinery. Static sealing refers to the tight closure of sealed chambers or containers, used for sealing letters and testamentary seals.

Phoenix seal construction

The skeleton oil seal structure consists of three parts: the seal body, the reinforcing skeleton, and the self-tightening helical spring. The seal body is further divided into the bottom, waist, cutting edge, and sealing lip depending on the section. Typically, in its free state, the inner diameter of a skeleton oil seal is smaller than the shaft diameter, meaning it has a certain "interference fit." Therefore, after the oil seal is installed in the seal housing and on the shaft, the pressure from the seal lip and the contraction force of the self-tightening helical spring exert a certain radial clamping force on the shaft. After a period of operation, this pressure will rapidly decrease or even disappear; thus, the spring can continuously compensate for the self-tightening force of the oil seal.

Phoenix seal usage instructions

1) When the gearbox lubricating oil volume is ≤7 liters, the additive amount per liter of lubricating oil is 20‐30ml; 2) When 7‐15 liters, the additive amount is 15‐20ml per liter of lubricating oil; 3) When >15 liters, the additive amount is 10ml per liter of lubricating oil; 4) Oil seals not in immediate use should be stored properly to prevent contamination with oil, dust, or exposure to sunlight. 5) When the shaft diameter wears into a "V" shaped groove, causing the contact pressure between the new oil seal lip and the shaft to drop so that it no longer seals effectively, the offset method can be used for compensation.

Phoenix seal precautions

1) Shaft speed: Due to design and structural reasons, high-speed shafts should use high-speed oil seals, and low-speed shafts should use low-speed oil seals. Low-speed oil seals must not be used on high-speed shafts, and vice versa. 2) Ambient temperature: In high operating temperature conditions, polyacrylate or silicone, fluorine, or silicone-fluorine rubber should be selected. Measures should be taken to reduce the oil temperature in the tank. In low operating temperature conditions, cold-resistant rubber should be selected. (3) Pressure: Standard oil seals have poor pressure resistance; excessive pressure will cause deformation. Under high-pressure conditions, pressure-resistant support rings or reinforced pressure-resistant oil seals should be used. 4) Installation eccentricity: Excessive eccentricity between the oil seal and the shaft will degrade sealing performance, especially at high shaft speeds. If eccentricity is excessive, oil seals with a "W" shaped cross-section can be used. 5) Shaft surface finish directly affects the service life of the oil seal; higher shaft smoothness results in longer oil seal life. 6) Ensure there is an adequate amount of lubricating oil on the oil seal lip. 7) Pay special attention to preventing dust from entering the oil seal.

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