On the sealing mechanism of radial lip seals

Stakenborg, Mjl

doi:10.1016/0301-679x(88)90110-7

Cited by 68 publications

(40 citation statements)

References 1 publication

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“…This is in line with FEM analysis results of Stakenborg (1988), who calculated b = 0.073 mm for this shaft/seal combination. It is also supported by calculations by Sponagel et al (1987) for the same seal and shaft size (b = 0.080 mm), and by experiments of Nakamura and Kawahara (1984) and Nakamura (1987), who find contact widths of run in seals with 85 mm diameter in between 0.050 and 0.100 mm.…”

Section: Contact Widthsupporting

confidence: 91%

“…Recent reviews on local measurement methods for seals can be found in Stakenborg (1988), Visscher and Kanters (1990), Visscher (1992), Poll and Gabelli (1992), and Poll et al (1992). These measurements include tangential deformation, meniscus position, surface distance, fluid film thickness, film and surface temperature, lip motion, and static pressure.…”

Section: Methodsmentioning

confidence: 99%

“…Recent contributions to the theory with state of the art surveys of existing models can be found in Müller (1987), Stakenborg (1988), Salant and Flaherty (1995) and Van Bavel et al (1996). From these references it can be concluded that fluid film formation can be explained by entrainment action, caused by deviations from a nominal smooth and parallel film.…”

Section: Theorymentioning

confidence: 99%

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The sealing and lubrication principles of plain radial lip seals: an experimental study of local tangential deformations and film thickness

Leeuwen

Wolfert

1997

Tribology Series

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Section: Contact Widthsupporting

confidence: 91%

Section: Methodsmentioning

confidence: 99%

Section: Theorymentioning

confidence: 99%

See 1 more Smart Citation

The sealing and lubrication principles of plain radial lip seals: an experimental study of local tangential deformations and film thickness

Leeuwen

Wolfert

1997

Tribology Series

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“…Stakenburg [24] observed the wetted area under the seal lip through a stationary shaft where the seal was rotating. He distinguished the contact area, wetted area at the lubricant side, and the wetted area at the air side of the contact.…”

Section: Surface Tension and Contact Anglementioning

confidence: 99%

Review of the lubrication, sealing, and pumping mechanisms in oil- and grease-lubricated radial lip seals

Baart

Lugt

Prakash

2009

Proceedings of the Institution of Mechanical Engineers, Part J:

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Radial lip seals are successfully used since the 1940s to seal lubricated systems. Despite extensive experimental and theoretical research in the field, it is still not fully clear how these seals function. Experimental studies, found in the public literature, show that the relatively high surface roughness of the seal lip is very important for good and reliable performance. In addition, the pressure distribution under the lip seems to be a critical factor. Six fundamental hypotheses are presented on the lubrication, pumping, and sealing mechanisms to explain the working principles of these seals. It is generally accepted that lubrication results from microelastohydrodynamic film build up between the rough seal surface and the shaft. Non-symmetrical tangential deformations of the lip surface are observed during experiments and assumed to act like spiral groove bearings that generate a pumping action and lubricant film. Another hypothesis suggests that the lubricant will behave non-Newtonian under the very high shear rates experienced in operating conditions. This will reduce friction because of shear-thinning and enhances sealing. Macroscopic aids, like hydrodynamic pumping aids and engineered asperity patterns on the shaft, do improve seal performance. Almost all public literature discusses oil-lubricated radial lip seals while many seals are grease-lubricated, especially in certain technical fields. Due to the non-Newtonian behaviour of grease, the lubrication, sealing, and pumping mechanisms are assumed to differ from the oil-lubricated seals. Lower friction and improved protection against contamination are measured, and it is expected that the interest in grease lubrication will rapidly grow in future.

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“…In fact, all simulations and experiments showed that a successful seal operates with a maximum shear displacement closer to the liquid side of the seal than to the air side. This action transforms the asperities into mini viscous pumps, thereby producing reverse pumping as described by Stakenborg [5]. 3/22 In order to improve the rotary lip seal performance, new generations of grooved lips [6] and shafts [7,8] have emerged.…”

Section: Introductionmentioning

confidence: 98%

Effect of grooved shaft on the rotary lip seal performance in transient condition: Elasto-hydrodynamic simulations

Gadari

Fatu

Hajjam

2016

Tribology International

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On the sealing mechanism of radial lip seals

Cited by 68 publications

References 1 publication

The sealing and lubrication principles of plain radial lip seals: an experimental study of local tangential deformations and film thickness

The sealing and lubrication principles of plain radial lip seals: an experimental study of local tangential deformations and film thickness

Review of the lubrication, sealing, and pumping mechanisms in oil- and grease-lubricated radial lip seals

Effect of grooved shaft on the rotary lip seal performance in transient condition: Elasto-hydrodynamic simulations

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