Germany INOXPA seals INOXPA models INOXPA prices

INOXPA seals are typical representatives of oil seals; generally, the term oil seal refers to skeleton oil seals. The function of an oil seal is generally to isolate components requiring lubrication within transmission parts from the external environment, preventing lubricating oil leakage. The skeleton acts like reinforcing steel in concrete components, providing reinforcement and enabling the oil seal to maintain its shape and tension. According to structural form, they can be divided into single-lip skeleton oil seals and double-lip skeleton oil seals. The secondary lip of a double-lip skeleton oil seal serves a dust-proof function, preventing external dust, impurities, etc., from entering the machine interior. According to skeleton type, they can be divided into internally covered skeleton oil seals, externally exposed skeleton oil seals, and assembled oil seals. According to operating conditions, they can be divided into rotary skeleton oil seals and reciprocating skeleton oil seals. Used for gasoline engine crankshafts, diesel engine crankshafts, gearboxes, differentials, shock absorbers, engines, axles, and other locations.

INOXPA seal advantages

1) Oil seals have a simple structure and are easy to manufacture. Simple oil seals can be molded in one step; even the most complex oil seals do not have complicated manufacturing processes. Metal skeleton oil seals only require processes such as stamping, bonding, inlaying, and molding to combine metal and rubber into the required oil seal. 2) Oil seals are lightweight and consume little material. Each oil seal is a combination of thin-walled metal and rubber components, consuming very little material, so each oil seal is very light. 3) The installation space for oil seals is small, with small axial dimensions, making them easy to process and allowing for compact machine design. 4) Oil seals have good sealing performance and a long service life. They have certain adaptability to machine vibration and spindle eccentricity. 5) Oil seals are easy to disassemble and convenient to inspect. 6) Oil seals are inexpensive.

INOXPA seal precautions

1) Preparation and precautions before startup: a a. Comprehensively check whether the mechanical seal, as well as auxiliary devices and pipeline installations, are complete and comply with technical requirements. b b. Perform a static pressure test on the mechanical seal before startup to check for leakage. If there is significant leakage, identify the cause and eliminate it. If this is ineffective, disassemble, inspect, and reinstall. Generally, the static test pressure is 2~3 kg/cm². c c. Rotate the pump according to its direction of rotation to check if it moves lightly and evenly. If rotation is difficult or stuck, check whether assembly dimensions are incorrect or installation is unreasonable. 2) Installation and shutdown: a a. Keep the seal chamber filled with liquid before startup. When transporting solidifying media, use steam to heat the seal chamber to melt the medium. Manual rotation must be performed before startup to prevent sudden startup from causing soft ring fracture. b b. For mechanical seals utilizing an external seal oil system, start the seal oil system first. Stop the seal oil system last after shutdown. c c. After stopping a hot oil pump, do not immediately stop the cooling water for the seal oil chamber and face seal. Wait until the oil temperature at the face seal drops below 80 degrees before stopping the cooling water to avoid damaging seal components. 3) Operation: a a. If slight leakage occurs after pump startup, observe for a period. If continuous operation for 4 hours does not reduce the leakage, stop the pump for inspection. b b. Pump operating pressure should be stable, with pressure fluctuations not exceeding 1 kg/cm². c c. During pump operation, avoid cavitation to prevent dry friction of the sealing surfaces and seal damage. d d. Frequently check the sealing condition. During operation, if leakage exceeds the standard (heavy oil not more than 5 drops/min, light oil not more than 10/min), and there is no improvement trend within 2-3 days, stop the pump to inspect the sealing device.

INOXPA 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. Do not use low-speed oil seals on high-speed shafts, and vice versa. 2) Ambient temperature: In cases of higher operating temperatures, select polyacrylate or silicone, fluorine, or silicone-fluorine rubber. Take measures to lower the oil temperature in the tank. In cases of lower operating temperatures, select cold-resistant rubber. (3) Pressure: General oil seals have poor pressure resistance; excessive pressure will cause the oil seal to deform. Under conditions of excessive pressure, use pressure-resistant support rings or reinforced pressure-resistant oil seals. 4) Installation eccentricity: If the eccentricity between the oil seal and the shaft is too large, sealing performance will deteriorate, especially at high shaft speeds. If eccentricity is too large, oil seals with a "W" shaped cross-section can be used. 5) Shaft surface finish directly affects the service life of the oil seal; i.e., higher shaft surface finish results in longer oil seal service life. 6) Ensure there is a certain amount of lubricating oil at the oil seal lip. 7) Pay special attention to preventing dust from entering the oil seal.

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