The Function And Structural Characteristics Of The Dust Ring DAI
Sep 20, 2021
The main function of all seals is to maintain good sealing performance during mechanical operation and prevent lubricating oil leakage and environmental pollution (dust particles), so the dust ring DAI must be configured in the hydraulic cylinder process. In terms of design specifications, it is necessary to combine suitable piston rod operation with proper groove sealing.
The wiper seals DAI removes the dirt attached to the outer surface of the cylinder when the reciprocating piston rod returns, such as dust, sand, rain and frost, and prevents external dust and rain from entering the internal parts of the sealing mechanism to protect Avoid damage to the sealing ring and guide sleeve. The auxiliary sealing function of the dust seals DAI is an important key to protecting hydraulic machinery and equipment parts. We can measure the dust attached to the surface of the piston rod in the lip to protect the oil film, thus improving the sealing effect of the intersection.
The dust-proof ring with dynamic function is specially suitable for adopting or customizing the sealing material of polyurethane, rubber, PTFE, because its elastic material has high hardness, good sealing effect, excellent wear resistance and low compression performance, and can be used in Most applications.
The static function of the dust ring is designed to be an unreinforced single-acting dust ring of a closed installation groove, and it is difficult to play an effective sealing role in the groove. If the entire dust ring shrinks when the temperature drops, the risk of leakage between its outer diameter and the groove will appear. At this time, this situation must be compensated in the design of the dust ring, which is easy to maintain the sealing performance.
