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Hydraulic Press Seals and Avoiding Common Seal Failures

by:ORK      2022-10-20
The 2 key roles of seals are to minimize or avoid hydrodynamic leaks to a greater level, and to maintain the ingress of dust and debris. If seals are not manufactured according to their specifications, or if they are not properly installed and maintained, the seals will become ineffective and cause hydrodynamic damage. In order for the seal to work properly, the seal must withstand extreme temperatures, high pressures, chemicals and air pollutants. Seals can be constructed from a variety of raw materials, and choosing the right seal for the job is not an easy task. It takes into account and masters not only the equipment or machinery on which the seal will rest on or within, but also the potential hazards of the seal's natural environment. Avoid Ineffective Seals Common failures of seals can cause machine problems and costly downtime. Although they are very durable if used properly, they can cause serious problems when used incorrectly. Even if the hydraulic transmission system works safely again when the leak occurs, the leak can cause great damage. Six leaks per minute (assuming 0.5ml per leak) from the RF connector of the hydraulic transmission, the remaining oil in a year is 47.5 gallons and is worth over a hundred dollars in use. A steady flow leak of 1/16 inch diameter increases cumulative oil damage by 520 gallons per year. Today, multiply that by the total number of commonly used RF connectors and you can quickly add up. However, if you understand the reasons for the ineffectiveness of sealing and how to prevent it, you can avoid such problems. Thus, while all seals eventually fail, the most common causes of premature failure include poor installation, environmental contamination, excessive temperature, working pressure or velocity, and chemical corrosion. Let's look at this problem one at a time. Poor installation. A poorly installed seal will be ineffective in a variety of ways due to carelessness, environmental contamination or even misapplication. Poor installation can cause the seal to tear or scratch, causing common failures. The seal can even be installed backwards, causing immediate leaks. It is important to properly measure the storage area of ​​the seals so that they fit precisely together. Without the proper size, the seal will crack (if large) or fail to seal (if small). For example, the tightness specification of an O-ring is determined by the tightness hole (the diameter of the hole in the housing where the tightness will be installed), the tightness diameter and the tightness total width (the total tightness width). The size of the seal shall be suitable for the diameter of a certain shaft or rod, and shall be marked accordingly. Seals are only applied when the design is conceived to specification. Environmental pollution. During the operation, metal shavings, powders, stains, soil, coarse sand and other small solid particles will be picked up and damaged seals and will enter the maintenance area. Causes will include contamination of the internal cylinder environment, damaged cylinders after a period of time, clogged filters, blackened car oil and poor wiper characteristics. All liquids used in this application should be properly filtered for debris. Temperature is too high. The heat will cause the urethane elastomer to harden and reduce its sealing properties, eventually becoming brittle and cracking. Raw materials will fall off, causing further environmental pollution. There is generally a required temperature range that is best for a particular seal application and should be followed. Elevated temperature also accelerates embrittlement. Application temperature and stable friction can drastically reduce the life expectancy of hydraulic press seals. For example, if you see radial cracks in the sealing edge when replacing a seal, the seal may have been exposed to excessive temperatures. On the other hand, when the actual operating environment is too cold, the seal will become brittle. Work pressure. When a seal is ineffective under a working pressure that exceeds its limit, it may be the result of excessive working pressure. The mode of destruction varies from fissures to detailed tectonic destruction. Check the maximum value of the working pressure, and ensure that the sealing design concept is in line with the working pressure in use. Like temperature, distributors require highly recommended working pressures for each seal to achieve the best characteristics (such as Treolleborg Rualing Solutors, whose products are specialized for a variety of hydraulic press applications, from light duty linear hydraulic presses to extra heavy duty rotary seals and static seals). data usage, and where it can easily identify working pressure and temperature specifications when selecting products). When the proposed working pressure is exceeded, seal damage can occur rapidly. In addition, the application of incorrect lubricating fluid or oil will cause the fluid density to thicken or deviate, and high speed operation. If it is used in a natural environment with a certain speed (such as an arc),Then the gasket will not be able to handle the rotational rate. The seal design is conceived to drag between the sealing lip and the subject active surface by means of wetting. The thickness of the lubricating film defines the friction level. As the speed increases, the sliding friction initially decreases, but over time, the sliding friction increases, causing seal damage. Rates below and beyond the proposed range can result in large increases in friction values ​​that can compromise rubber seals seals. Organic chemistry deteriorated. Corrosive fluid mechanics or incompatible ingredients such as oil additives can cause damage to rubber seals seals. This kind of situation will occur when an unsuitable rubber seal is selected for use. Applying organic chemical hydrodynamics to couple the seal to the hydraulic transmission system will cause the raw material to crack or squeeze. Chemical corrosion can be mainly manifested as swelling or shrinking of the seal.
rubber seals custom rubber seals, as the name suggests, find extensive use in custom rubber seals institutions. Since custom rubber seals has become much dependent on technology in today's world, there is wide use of such rubber seals.
At Ruichen Sealing Co., Ltd., we make sure everything we do honors that connection – from our commitment to the highest quality in the world, to the way we serve our customers and communities to do business responsibly. We are looking forward to becoming trusted supplier of every customer, inquire us at ORK Rubber Seal Products!
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