O-ring wear test machine

Burr, Bruce H.; Marshek, Kurt M.

doi:10.1016/0043-1648(81)90016-8

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2017

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Cited by 12 publications

(2 citation statements)

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“…The life of conventional elastomeric seals is limited, however, by eventual loss of radial compression, with abrasive wear at the sealing interface the primary failure mechanism. 1,2 This loss of radial compression permits abrasive drilling fluid to intrude into the bearing system and results in bit failure. This wear mechanism has been confirmed over the years by analysis of bits returned from the field by Dresser Industries/Security Div.…”

Section: Introductionmentioning

confidence: 99%

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Field Performance of a Hydrodynamically Lubricated Bearing Seal for Rock Bits

Langford¹,

Kalsi

1992

SPE Drilling Engineering

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This paper presents field performance results for a new type of bearing seal for rock bits. The new seal design is found to be effective in significantly reducing abrasive wear at the sealing interface by virtue of its unique geometry that simultaneously introduces a hydrodynamic lubricant film and prevents the ingress of abrasives at the sealing interface. This has resulted in longer seal life and overall improvements in the rock-bit performances by a significant reduction in early seal failures.

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Section: Introductionmentioning

confidence: 99%

“…and other rock-bit manufacturers. 1,2 This paper presents field performance results for a new type of bearing seal that directly attacks abrasive wear of the sealing surfaces, the primary mechanism that has limited the life of conventional seals. Figs.…”

Section: Introductionmentioning

confidence: 99%