The Effect of Wear on the Performance of a Rotary Lip Seal

Guo, Fei; Jia, Xin; Wang, Longke; Salant, Richard F.; Wang, Yuming

doi:10.1115/1.4027623

Cited by 35 publications

(18 citation statements)

References 12 publications

(21 reference statements)

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“…The common characteristic value for wear at the sealing edge of a radial lip seal is the wear (band) width [3,8,14]. It can be measured directly and determines the contact band width and thus the sealing function [15]. The tribological function of the radial lip seal is directly dependent on the pressure and specifically on the pressure distribution in the sealing contact.…”

Section: Wear Evaluation Of the Sealing Edgementioning

confidence: 99%

Influence of Alternating Temperature Levels on the Wear Behavior of Radial Lip Seals: Test Rig Design and Wear Analysis

Merkle¹,

Baumann²,

Bauer³

2021

Applied Engineering Letters

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Radial lip seals are a common seal type for various industrial applications. In retarder breaking systems for commercial vehicles, radial lip seals are exposed to very fast changing oil sump temperatures. Due to increasing demands, the elastomer seals are increasingly failing premature in such applications. It is assumed that this is caused in particular by the very high temperature gradients, that result from the fact that a lot of braking power is dissipated within a short time. This is the case, for example, when braking while driving downhill with heavy loads. Since the temperature gradient is of minor importance in many applications, there are no publications regarding the specific influence of high temperature gradients on the function of radial shaft seals. Therefore, a test rig with advanced heating and cooling capacities is developed. A comprehensive test series is carried out, with the main focus on the influence of high temperature gradients on the wear behavior of the seals. Test results show, that different temperature levels lead to a significant change of the wear behavior. Additionally, fast changing temperatures are adding additional tribological stress to the sealing system.

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Section: Wear Evaluation Of the Sealing Edgementioning

confidence: 99%

Influence of Alternating Temperature Levels on the Wear Behavior of Radial Lip Seals: Test Rig Design and Wear Analysis

Merkle¹,

Baumann²,

Bauer³

2021

Applied Engineering Letters

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“…The wear of seal would change the sealing lip profile, and thus affects sealing performance and service lifetime. 13 In order to analyze the wear of the seal, macroscopic simulation methods are commonly used in the past. Békési et al.…”

Section: Introductionmentioning

confidence: 99%

“…Guo et al. 13 studied the effects of seal wear on the performance of rotary lip seal, including pumping rate and friction torque. According to the research results, the pumping rate decreases first sharply and then gradually, the friction torque first increases sharply and then decreases gradually.…”

Section: Introductionmentioning

confidence: 99%

A multiscale wear model for reciprocating rod stepseal under mixed lubricating conditions based on linear elasticity

Ran

Wang

Liu

2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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The macroscale simulation methods are commonly used to study the wear of reciprocating seals to analyze macroscopic effects on the seal wear. There is a lack of numerical method for analyzing the wear of reciprocating seal under mixed lubricating conditions. According to experimental studies, some microscopic factors, including lubrication characteristics and surface roughness, are important for wear of reciprocating seal. Hence, in the presented research, a numerical model is proposed to analyze the effects of microscopic factors on reciprocating rod stepseal wear. O-ring of the stepseal is considered to be hyper elastic, while Turcon ring of the stepseal, which directly contacts with rod surface, is assumed to be linear elastic. The effects of microscopic aspects, including lubrication characteristics, are highlighted and analyzed. Furthermore, the seal wears under different operating conditions are analyzed and discussed. The simulation results show that the seal wears during outstroke and instroke are different. With the rod speed increasing, the wear distance rate increases during outstroke, while decreases during instroke. The seal wear increases with the sealed pressure increasing and/or compression rate increasing. With the increase in the fluid viscosity, the wear of the seal increases during outstroke and decreases during instroke. With the increase in the seal surface roughness, the seal wear decreases during outstroke and increases during instroke.

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“…With the change of the lip profile, the contact width and contact pressure on the sealing zone are changed accordingly. Since the sealing performance is significantly dependent on the contact width and contact pressure, the wear of the sealing lip would lead to a continuous change of the sealing behaviors, including friction, leakage, and so on [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

A Numerical Wear Simulation Method of Reciprocating Seals with a Textured Rod

2020

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Reciprocating rod seals are widely used in the hydraulic actuator to prevent the leakage of fluid. The sealing lip profile changes with the seal wear, resulting in an increase in the leakage. A texturing rod changes the lubrication characteristics of the seal, so it affects the wear and leakage of the seal. A numerical simulation method is proposed to investigate the wear of the hydraulic reciprocating seal with textured rods. Several kinds of macro-cavity textures on the rod surface, including circle, square and triangle shapes, have been simulated and discussed. The effects of three shape parameters including area ratio, depth, and ratio of the axial length to the circumferential length on the seal wear are analyzed in detail. The texturing rod slightly increases the seal wear, but decreases the seal leakage. When the rod speed is increasing, the wear time rates of the seal increase, while the wear distance rates decrease, regardless of the texture shapes. When the texture area ratio is increasing, the wear of the reciprocating seal increases. Seal wear decreases with an increasing texture depth during the outstroke, however, it increases during the instroke. The ratio of the axial length of the macro-cavity to the circumferential length has no effect on the seal wear.

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The Effect of Wear on the Performance of a Rotary Lip Seal

Cited by 35 publications

References 12 publications

Influence of Alternating Temperature Levels on the Wear Behavior of Radial Lip Seals: Test Rig Design and Wear Analysis

Influence of Alternating Temperature Levels on the Wear Behavior of Radial Lip Seals: Test Rig Design and Wear Analysis

A multiscale wear model for reciprocating rod stepseal under mixed lubricating conditions based on linear elasticity

A Numerical Wear Simulation Method of Reciprocating Seals with a Textured Rod

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