Constant section retaining rings feature a uniform, constant section. This means that the material used to make the ring is the same width at any point along the circumference of the ring. These cost less than tapered and spiral retaining rings and provide only three point contact with the groove.
Comparing the retaining ring with the packing seal, the mechanical seal can play a good sealing effect and is more reliable in application. Typically, there will be no leakage or a small amount of leakage. The probability of leakage is only 1% of the packing sealing method, but there will be a sudden failure of the mechanical seal, which will cause a larger leakage accident and affect the normal production.
The retaining ring has a relatively long service life. Generally, the working medium in the chemical pump body does not contain particles, or there are very few particles, which can be used for 1 to 2 years, or a longer service life.
When the chemical pump is running, you only need to pay attention to the flushing of the cooling pipe, and there is no need to perform complex maintenance on the seals. The mechanical seal uses friction pairs to achieve sealing, and the mutual liquid films can effectively lubricate, and the friction will not be too large. The power only reaches 10%~15% of the packing seal, and there will not be too much wear between the shaft and the shaft sleeve.
The retaining ring has better manufacturing accuracy than the packing seal. The end faces of the dynamic and static rings need to achieve high accuracy and roughness, but the machining accuracy of the shaft is not high. The materials required for the friction pair and other components should be selected according to the working medium, and it is difficult to match. If there is no scientific and reasonable selection, the retaining ring may fail.
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Equal section circlips are made by winding thick section steel wire. This process creates a retaining ring that supports high thrust loads. A plier-type tool can be used for easy installation on some series of rings. Many materials and finishes are available, and custom designs often do not require any custom tooling, making it very economical to produce special products.
Tapered section rings are the most common type of rings in use today. They are manufactured by stamping rolled steel into finished shapes, or by coiling rectangular section wire and then cutting taper and lug holes. The tapered section allows these rings to be flexibly installed using ring pliers. In addition, the large cross-section of these rings enables high thrust load capacity.
Spiral wound retaining rings are made by coiling thin section flat wire. This process produces a holding device that supports moderate to high thrust loads and still remains flexible enough to be installed manually. Spiral rings provide engineers with more clearance than rings with removal lugs, so if clearance diameter is an issue, then helical rings should fit the bill. Most helical rings are designed with multiple turns, producing a full 360 degree shoulder.