single lip tin skeleton oil seal SA type for gear box

SA type single lip oil seal, iron shell combination, internal half package, single main lip oil seal with spring inside. It is a rotary oil seal, used for sealing in oiled and dust-free applications, with a pressure resistance of 0.03MPa, within 0.3kgf/m². According to different medium, pressure and temperature, choose different materials. Common materials include: Butyral rubber SA type skeleton oil seals, Fluoroelastomer SA type skeleton oil seals, Silicone rubber SA type skeleton oil seals and so on. Mainly used in: motor oil seals, reducer oil seals, gear box oil seals, motor oil seals, mechanical arm oil seals, wind power generation and other various industrial seals.

1. Structural Features
   • Single-lip design: SA type oil seal has one main sealing lip, and this lip is in contact with the shaft surface to form a seal. The single-lip design makes the oil seal have good sealing effect when working, but it may not be as effective as the double-lip design under high pressure or high pollution environment.
   • Tin Skeleton: The skeleton of this type of oil seal is made of tin (usually steel plate), which has high mechanical strength. The iron skeleton provides structural support that allows the oil seal to maintain its shape and position during installation and operation.
   • Spring: Usually, SA type oil seals are equipped with a spring on the inside of the sealing lip. This spring ensures that the sealing lip always maintains good contact with the shaft during the whole working process and enhances the sealing effect.
   • Material: The sealing lip of the oil seal is usually made of abrasion-resistant and oil-resistant materials, such as fluorine rubber, oil-resistant rubber, etc., in order to cope with different working environments and media.
2. Application Areas
   • Mechanical equipment: SA type oil seals are commonly used in various mechanical equipment, such as electric motors, reducers, pumps, etc., to prevent lubricant leakage and external contaminants from entering into the equipment.
   • Automobile industry: In automobiles, SA type oil seals are used in engine, transmission, wheel bearings, etc. to ensure the sealing of lubricating oil or liquid, and improve the reliability and durability of the whole vehicle.
   • Agricultural machinery: In agricultural machinery such as tractors and harvesters, SA type oil seals are also commonly used, they help to maintain the normal operation of mechanical parts and prevent the leakage of lubricants.
3. Installation and Maintenance
   • Installation: When installing SA type oil seals, it is necessary to ensure that the surface of the shaft is smooth and the installation position of the seal should be accurate to avoid oil leakage or damage to the seal.
   • Maintenance: Regularly check the wear and sealing performance of oil seals, and timely replace the aging or damaged oil seals, which can effectively extend the service life of the equipment.

SA type skeleton oil seal is widely used in various machinery and automobile fields because of its simple structure, low cost and better sealing performance. Choosing the right oil seal can significantly improve the operating efficiency and reliability of the equipment.

single lip tin skeleton oil seal