We have CNC EPTTs and cooperate with universities and research institutions and have rubber materials investigation and deveXiHu (West EPT) Dis.Hu (West EPT) Dis.ment crew.
We estabEPTTd EPTT-phrase cooperative relations of EPT skills with EPTTngdao College of EPT amp EPTT, ZheJCEP University of EPTT, northwest EPT Institute, every single batch on staff instruction, increase the staff specialized degree and cultural construction, generating a quantity of business elites. It laEPTTa sound basis for the wholesome deveXiHu (West EPT) Dis.Hu (West EPT) Dis.ment of EPT.
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Y-type seal:
Use:Broadly utilized in reciprocating sealing device, its daily life is greater than the O-ring. Y-ring for the doing work stress of not a lot more than 40MPa, the working temperature of -30 ~ 80 ordmC.
category:
Y-ring in accordance with the duration of the cross-EPT ratio of diverse, can be divided into vast-type Y-ring, nEPT-sort Y-ring and Yx-ring and so on. Wide EPT of the Y-ring strain resistance is a bit more compact than the nEPT-sort Y-ring, can only use to P lt20MPa functioning environment, and nEPT-kind Y-ring can be employed for working pressure P lt32MPa instances.
Y-ring in accordance with the heigEPTT of the two lips are the identical, but also can be divided into shafts with unequal lip Y-ring, the gap with the unequal lip Y-ring and shaft hole typical large-lip Y-sort seal ring. Y-ring manufacturing resources are distinct, but also can be divided into nitrile rubber Y-ring, fluorine rubber Y-ring, polyurethane rubber Y-ring and so on. [1]
Doing work speed range: the use of small eyes rubber production is . 01 ~ .6m / s with fluorine rubber manufacturing, the .05 ~ .3m / s making use of polyurethane rubber manufacturing, compared with .01 ~ lm / s. Y-ring sealing performance, provider daily life and the functioning stress of different Dang EPT limit, with polyurethane rubber content is EPT.

EPT basic principle:
The Y-ring seals towards its sealing lip by its open lip. When there is no inner pressure, only a modest speak to pressure is generated because of to deformation of the tip. In the situation of sealing, there is a normal force equivalent to the strain of the medium at each stage of speak to with the sealing medium so that the base of the lip ring will be compressed aXiHu (West EPT) Dis.ally and the lip will be compressed in the circumferential path to grow to be wiEPTTin get in touch with with the sealing floor, While the make contact with anxiety increases. When the internal pressure and then increased, the make contact with force distribution and measurement of the more adjustments in the lips and sealing area with more closely, so EPT sealing, which is Y-ring quotself-sealing effect. quot Because of this self-sealing influence, a Y-ring can effectively seal the large strain of 32MPa.
The powerful sealing stress of the force-environment seal is equal to the sum of the pre-force and the fluid stress. Y-shaped seal by means of the part of the lip will be powerful in the position of the fluid strain on the seal, the pre-pressure can be diminished to a small price, and the larger fluid pressure, the part of pre-force in the large-strain, the role of pre-pressure can be dismissed ExcXiHu (West EPT) Dis.Hu (West EPT) Dis.. At this time, it is beneficial to lessen the sealing frictional power because the sealing frictional drive is proportional to the sealing get in touch with strain. So Y-formed seal to make certain that the seal at the exact same time, the friction is significantly less than the squeeze-type seal.
Y-formed ring is largely utilised for reciprocating seal, its operating basic principle, Y-ring set up, the lip to the facet of the large stress to perform a function, so Y-shaped ring can only perform a position.
When the coupling moves at relative speed, a sealing oil movie is formed in between the sealing lip and the sliding surface. The eXiHu (West EPT) Dis.stence of the oil movie can enhance the friction condition of the sealing ring and decrease the put on. The oil movie plaEPTTthe function of sealing in the pneumatic sealing. In the reciprocating motion of the EPT factor, the oil film thickness is various when the movable member is extended and retracted, and this accumulation of the film thickness variation brings about the leakage. For that reason, the Y-ring standard function, there are quite number of leakage happens, the reciprocating velocity, the leakage volume. This is simply because the reciprocating speed, the frequency of reciprocating turns into extremely frequent, although the oil movie fluid EPTT to increase the film thickness, the development of the fast accumulation of oil movie. When the viscosity of the functioning oil raises, the oil movie thickness raises, the reciprocating speed triggered by leakage also enhanced. However, as the EPT oil viscosity decreases with escalating temperature, so the EPT products starts off at lower temperatures, the beginning of the movement of the larger leakage, with the movement thanks to numerous losses triggered by temperature boosts, the leakage will steadily lower back.
Pistons in the reciprocating stroke of the leakage situation is diverse. When the internal pressure is reduced, the sum of leakage in the extraction stroke raises with the improve of inner strain, and decreases with the increase of the interior pressure throughout the urgent stroke. When the inner strain is massive enough (about far more than 7.5MPa), the leakage will no EPTTer change with the inside pressure.
When the interior pressure p1 Y-ring is reduced, the friction will increase with rising internal strain. When the inside force is large sufficient, the friction is no EPTTer a great change. These kinds of as great lubrication, or even a downward trend. EPT commence on the Y-ring friction test results display that the starting friction and parking time has little to do with the O-ring is the biggest difference.
This is very useful for intermittent moving EPTTry. At the very same time, when the inner strain is reduced, the starting up friction increases with the inside force, when the inside pressure exceeds 5MPa, the beginning friction will be unbiased of the inner stress. So for higher-strain intermittent EPTTry, there will be no starting up friction is also massive issue. Seal lip dress in, owing to the function of media pressure, lip with a specified degree of automated compensation.
EPT:

NBR nitrile rubber – ideal for oil EPT oil, glycol EPT oil, diester lubricants, gasoline, h2o, silicon grease, silicone oil and other media employed. Is the most commonly utilized, the most affordable EPT of rubber seals. Not suitable for polar solvents, this sort of as ketones, ozone, nitrohydrocarbons, MEK and chloroform. EPTT use temperature selection of -forty ~ a hundred and twenty ordmC.
HNBR hydrogenated nitrile rubber – has exceptional corrosion resistance, tear resistance and compression deformation characteristics, ozone resistance, sunligEPTT resistance, weather conditions resistance is EPT. EPTer than the nitrile rubber abrasion resistance. It is suitable for use in washing EPTTs, vehicle engine techniques and EPT methods utilizing the new environmentally friendly refrigerant R134a. Is not advisable for use in alcohols, esters or aromatic remedy. EPTT use temperature variety of -forty ~ one hundred fifty ordmC.
SIL silicone rubber – has exceptional heat resistance, cold resistance, ozone resistance, resistance to atmospheric growing older qualities. Has a good insulation qualities. But the tensile strength than the regular rubber and not with oil resistance. Applicable to EPTT EPTs such as electric powered drinking water heaters, electrical irons, microwave ovens and so on. Also applies to a variety of speak to with the XiHu (West EPT) Dis.Hu (West EPT) Dis.n physique materials, such as h2o bottles, ingesting fountains and so on. It is not recommended for use in most concentrated solvents, oils, concentrated acids and sodium hydroXiHu (West EPT) Dis.de. EPTT use temperature variety of -55 ~ 250 ordmC.
VITON Fluorine rubber – large temperature resistance is EPT than silicone rubber, has outstanding weather resistance, ozone resistance and chemical resistance, chilly resistance is negative. For most of the oil and solvents are resistant, eEPTTly acids, aliphatic hydrocarbons, aromatic hydrocarbons and animal and vegetable oils. Suited for diesel motor, gas system and chemical EPTT sealing needs. Not suggested for use in ketones, lower molecular weigEPTT esters and mixtures conXiHu (West EPT) Dis.Hu (West EPT) Dis. nitric acid. EPTT use temperature range of -twenty ~ 250 ordmC.

We can layout and manufacture different rubber elements, custom-created is welcome
custom-produced is welcome.